3928597520761 has 3 divisors (see below), whose sum is σ = 3928599502831. Its totient is φ = 3928595538692.

The previous prime is 3928597520693. The next prime is 3928597520777. The reversal of 3928597520761 is 1670257958293.

The square root of 3928597520761 is 1982069.

It is a perfect power (a square), and thus also a powerful number.

3928597520761 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1364179616361 + 2564417904400 = 1167981^2 + 1601380^2 .

It is not a de Polignac number, because 3928597520761 - 2³⁹ = 3378841706873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3928597520693 and 3928597520702.

It is not an unprimeable number, because it can be changed into a prime (3928597520461) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 991035 + ... + 2973103.

Almost surely, 2^{3928597520761} is an apocalyptic number.

3928597520761 is the 1982069-th square number.

3928597520761 is the 991035-th centered octagonal number.

It is an amenable number.

3928597520761 is a deficient number, since it is larger than the sum of its proper divisors (1982070).

3928597520761 is an frugal number, since it uses more digits than its factorization.

3928597520761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964138 (or 1982069 counting only the distinct ones).

The product of its (nonzero) digits is 57153600, while the sum is 64.

Multiplying 3928597520761 by its sum of digits (64), we get a square (251430241328704 = 15856552²).

The spelling of 3928597520761 in words is "three trillion, nine hundred twenty-eight billion, five hundred ninety-seven million, five hundred twenty thousand, seven hundred sixty-one".