748091631 has 8 divisors (see below), whose sum is σ = 1139949184. Its totient is φ = 427480920.

The previous prime is 748091623. The next prime is 748091639. The reversal of 748091631 is 136190847.

It is an interprime number because it is at equal distance from previous prime (748091623) and next prime (748091639).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 748091631 - 2³ = 748091623 is a prime.

It is a super-2 number, since 2×748091631² = 1119282176744480322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 748091631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748091639) by changing a digit.

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, 17811685 + ... + 17811726.

It is an arithmetic number, because the mean of its divisors is an integer number (142493648).

Almost surely, 2^748091631 is an apocalyptic number.

748091631 is a deficient number, since it is larger than the sum of its proper divisors (391857553).

748091631 is a wasteful number, since it uses less digits than its factorization.

748091631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35623421.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 748091631 is about 27351.2637916422. The cubic root of 748091631 is about 907.7890337532.

The spelling of 748091631 in words is "seven hundred forty-eight million, ninety-one thousand, six hundred thirty-one".