91394125492 has 24 divisors (see below), whose sum is σ = 163866850560. Its totient is φ = 44575381440.

The previous prime is 91394125453. The next prime is 91394125541. The reversal of 91394125492 is 29452149319.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1070653 + ... + 1152859.

It is an arithmetic number, because the mean of its divisors is an integer number (6827785440).

Almost surely, 2^91394125492 is an apocalyptic number.

It is an amenable number.

91394125492 is a deficient number, since it is larger than the sum of its proper divisors (72472725068).

91394125492 is a wasteful number, since it uses less digits than its factorization.

91394125492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89031 (or 89029 counting only the distinct ones).

The product of its digits is 699840, while the sum is 49.

The spelling of 91394125492 in words is "ninety-one billion, three hundred ninety-four million, one hundred twenty-five thousand, four hundred ninety-two".