22918466940 has 48 divisors (see below), whose sum is σ = 64205574048. Its totient is φ = 6108365824.

The previous prime is 22918466897. The next prime is 22918466993. The reversal of 22918466940 is 4966481922.

It is a super-2 number, since 2×22918466940² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14944 + ... + 214616.

It is an arithmetic number, because the mean of its divisors is an integer number (1337616126).

Almost surely, 2^22918466940 is an apocalyptic number.

22918466940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22918466940 is an abundant number, since it is smaller than the sum of its proper divisors (41287107108).

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

22918466940 is a wasteful number, since it uses less digits than its factorization.

22918466940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201598 (or 201596 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 22918466940 in words is "twenty-two billion, nine hundred eighteen million, four hundred sixty-six thousand, nine hundred forty".