1041601906921 has 3 divisors (see below), whose sum is σ = 1041602927511. Its totient is φ = 1041600886332.

The previous prime is 1041601906909. The next prime is 1041601906997. The reversal of 1041601906921 is 1296091061401.

The square root of 1041601906921 is 1020589.

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

1041601906921 is digitally balanced in base 2, because in such base 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., 568725631321 + 472876275600 = 754139^2 + 687660^2 .

It is not a de Polignac number, because 1041601906921 - 2²³ = 1041593518313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1041601906901) 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, 510295 + ... + 1530883.

It is an arithmetic number, because the mean of its divisors is an integer number (347200975837).

Almost surely, 2^{1041601906921} is an apocalyptic number.

1041601906921 is the 1020589-th square number.

1041601906921 is the 510295-th centered octagonal number.

It is an amenable number.

1041601906921 is a deficient number, since it is larger than the sum of its proper divisors (1020590).

1041601906921 is an frugal number, since it uses more digits than its factorization.

1041601906921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041178 (or 1020589 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 1041601906921 in words is "one trillion, forty-one billion, six hundred one million, nine hundred six thousand, nine hundred twenty-one".