748578949631 has 2 divisors, whose sum is σ = 748578949632. Its totient is φ = 748578949630.

The previous prime is 748578949597. The next prime is 748578949667. The reversal of 748578949631 is 136949875847.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 748578949631 - 2³⁰ = 747505207807 is a prime.

It is a super-2 number, since 2×748578949631² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (748578949681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374289474815 + 374289474816.

It is an arithmetic number, because the mean of its divisors is an integer number (374289474816).

Almost surely, 2^748578949631 is an apocalyptic number.

748578949631 is a deficient number, since it is larger than the sum of its proper divisors (1).

748578949631 is an equidigital number, since it uses as much as digits as its factorization.

748578949631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 365783040, while the sum is 71.

The spelling of 748578949631 in words is "seven hundred forty-eight billion, five hundred seventy-eight million, nine hundred forty-nine thousand, six hundred thirty-one".