91414201938 has 32 divisors (see below), whose sum is σ = 183392784960. Its totient is φ = 30377410560.

The previous prime is 91414201933. The next prime is 91414201961. The reversal of 91414201938 is 83910241419.

It is a super-2 number, since 2×91414201938² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91414201938.

It is not an unprimeable number, because it can be changed into a prime (91414201933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5943378 + ... + 5958738.

It is an arithmetic number, because the mean of its divisors is an integer number (5731024530).

Almost surely, 2^91414201938 is an apocalyptic number.

91414201938 is an abundant number, since it is smaller than the sum of its proper divisors (91978583022).

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

91414201938 is a wasteful number, since it uses less digits than its factorization.

91414201938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18362.

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 91414201938 in words is "ninety-one billion, four hundred fourteen million, two hundred one thousand, nine hundred thirty-eight".