918929131 has 4 divisors (see below), whose sum is σ = 920579472. Its totient is φ = 917278792.

The previous prime is 918929093. The next prime is 918929149. The reversal of 918929131 is 131929819.

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

It is a cyclic number.

It is not a de Polignac number, because 918929131 - 2¹¹ = 918927083 is a prime.

It is a super-2 number, since 2×918929131² = 1688861495600830322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (918929171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 824335 + ... + 825448.

It is an arithmetic number, because the mean of its divisors is an integer number (230144868).

Almost surely, 2^918929131 is an apocalyptic number.

918929131 is a deficient number, since it is larger than the sum of its proper divisors (1650341).

918929131 is a wasteful number, since it uses less digits than its factorization.

918929131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650340.

The product of its digits is 34992, while the sum is 43.

The square root of 918929131 is about 30313.8438836120. The cubic root of 918929131 is about 972.2113191214.

The spelling of 918929131 in words is "nine hundred eighteen million, nine hundred twenty-nine thousand, one hundred thirty-one".