91952381 has 12 divisors (see below), whose sum is σ = 99244800. Its totient is φ = 84958560.

The previous prime is 91952369. The next prime is 91952387. The reversal of 91952381 is 18325919.

It is not a de Polignac number, because 91952381 - 2⁶ = 91952317 is a prime.

It is a super-2 number, since 2×91952381² = 16910480743138322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91952387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30500 + ... + 33378.

It is an arithmetic number, because the mean of its divisors is an integer number (8270400).

Almost surely, 2^91952381 is an apocalyptic number.

It is an amenable number.

91952381 is a deficient number, since it is larger than the sum of its proper divisors (7292419).

91952381 is a wasteful number, since it uses less digits than its factorization.

91952381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980 (or 2939 counting only the distinct ones).

The product of its digits is 19440, while the sum is 38.

The square root of 91952381 is about 9589.1804133617. The cubic root of 91952381 is about 451.3578427189.

The spelling of 91952381 in words is "ninety-one million, nine hundred fifty-two thousand, three hundred eighty-one".