90474422418 has 48 divisors (see below), whose sum is σ = 203819406336. Its totient is φ = 30079337040.

The previous prime is 90474422411. The next prime is 90474422419. The reversal of 90474422418 is 81422447409.

It is a super-2 number, since 2×90474422418² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90474422411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56893 + ... + 429168.

It is an arithmetic number, because the mean of its divisors is an integer number (4246237632).

Almost surely, 2^90474422418 is an apocalyptic number.

90474422418 is an abundant number, since it is smaller than the sum of its proper divisors (113344983918).

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

90474422418 is a wasteful number, since it uses less digits than its factorization.

90474422418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486461 (or 486449 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 90474422418 in words is "ninety billion, four hundred seventy-four million, four hundred twenty-two thousand, four hundred eighteen".