920983814957 has 4 divisors (see below), whose sum is σ = 943446834876. Its totient is φ = 898520795040.

The previous prime is 920983814953. The next prime is 920983814981. The reversal of 920983814957 is 759418389029.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 319791381001 + 601192433956 = 565501^2 + 775366^2 .

It is a cyclic number.

It is not a de Polignac number, because 920983814957 - 2² = 920983814953 is a prime.

It is a super-2 number, since 2×920983814957² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 920983814893 and 920983814902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920983814953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11231509898 + ... + 11231509979.

It is an arithmetic number, because the mean of its divisors is an integer number (235861708719).

Almost surely, 2^920983814957 is an apocalyptic number.

It is an amenable number.

920983814957 is a deficient number, since it is larger than the sum of its proper divisors (22463019919).

920983814957 is a wasteful number, since it uses less digits than its factorization.

920983814957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22463019918.

The product of its (nonzero) digits is 39191040, while the sum is 65.

The spelling of 920983814957 in words is "nine hundred twenty billion, nine hundred eighty-three million, eight hundred fourteen thousand, nine hundred fifty-seven".