920990204893 has 16 divisors (see below), whose sum is σ = 1011367171584. Its totient is φ = 831724320960.

The previous prime is 920990204891. The next prime is 920990204899. The reversal of 920990204893 is 398402099029.

It is a cyclic number.

It is not a de Polignac number, because 920990204893 - 2¹ = 920990204891 is a prime.

It is a super-2 number, since 2×920990204893² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920990204891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7114996 + ... + 7243282.

It is an arithmetic number, because the mean of its divisors is an integer number (63210448224).

Almost surely, 2^920990204893 is an apocalyptic number.

It is an amenable number.

920990204893 is a deficient number, since it is larger than the sum of its proper divisors (90376966691).

920990204893 is a wasteful number, since it uses less digits than its factorization.

920990204893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132612.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The spelling of 920990204893 in words is "nine hundred twenty billion, nine hundred ninety million, two hundred four thousand, eight hundred ninety-three".