918129040 has 40 divisors (see below), whose sum is σ = 2136613248. Its totient is φ = 366913920.

The previous prime is 918129029. The next prime is 918129041. The reversal of 918129040 is 40921819.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 918128987 and 918129005.

It is not an unprimeable number, because it can be changed into a prime (918129041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93819 + ... + 103141.

Almost surely, 2^918129040 is an apocalyptic number.

It is an amenable number.

918129040 is an abundant number, since it is smaller than the sum of its proper divisors (1218484208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

918129040 is a wasteful number, since it uses less digits than its factorization.

918129040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10567 (or 10561 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 918129040 is about 30300.6442175740. The cubic root of 918129040 is about 971.9290763223.

The spelling of 918129040 in words is "nine hundred eighteen million, one hundred twenty-nine thousand, forty".