537856491769 has 3 divisors (see below), whose sum is σ = 537857225157. Its totient is φ = 537855758382.

The previous prime is 537856491763. The next prime is 537856491833. The reversal of 537856491769 is 967194658735.

The square root of 537856491769 is 733387.

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

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 is not a de Polignac number, because 537856491769 - 2¹⁵ = 537856459001 is a prime.

It is a super-3 number, since 3×537856491769³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 537856491698 and 537856491707.

It is not an unprimeable number, because it can be changed into a prime (537856491763) 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, 366694 + ... + 1100080.

It is an arithmetic number, because the mean of its divisors is an integer number (179285741719).

Almost surely, 2^537856491769 is an apocalyptic number.

537856491769 is the 733387-th square number.

537856491769 is the 366694-th centered octagonal number.

It is an amenable number.

537856491769 is a deficient number, since it is larger than the sum of its proper divisors (733388).

537856491769 is an frugal number, since it uses more digits than its factorization.

537856491769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466774 (or 733387 counting only the distinct ones).

The product of its digits is 342921600, while the sum is 70.

The spelling of 537856491769 in words is "five hundred thirty-seven billion, eight hundred fifty-six million, four hundred ninety-one thousand, seven hundred sixty-nine".