900118931 has 4 divisors (see below), whose sum is σ = 900316872. Its totient is φ = 899920992.

The previous prime is 900118913. The next prime is 900118991. The reversal of 900118931 is 139811009.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-900118931 is a prime.

It is a super-2 number, since 2×900118931² = 1620428179889165522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (900118991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91985 + ... + 101298.

It is an arithmetic number, because the mean of its divisors is an integer number (225079218).

Almost surely, 2^900118931 is an apocalyptic number.

900118931 is a deficient number, since it is larger than the sum of its proper divisors (197941).

900118931 is a wasteful number, since it uses less digits than its factorization.

900118931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197940.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 900118931 is about 30001.9821178535. The cubic root of 900118931 is about 965.5319111095.

The spelling of 900118931 in words is "nine hundred million, one hundred eighteen thousand, nine hundred thirty-one".