745383891 has 16 divisors (see below), whose sum is σ = 1157255424. Its totient is φ = 417896544.

The previous prime is 745383829. The next prime is 745383893. The reversal of 745383891 is 198383547.

It is not a de Polignac number, because 745383891 - 2¹¹ = 745381843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 745383891.

It is not an unprimeable number, because it can be changed into a prime (745383893) 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, 333741 + ... + 335966.

It is an arithmetic number, because the mean of its divisors is an integer number (72328464).

Almost surely, 2^745383891 is an apocalyptic number.

745383891 is a deficient number, since it is larger than the sum of its proper divisors (411871533).

745383891 is a wasteful number, since it uses less digits than its factorization.

745383891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669770.

The product of its digits is 725760, while the sum is 48.

The square root of 745383891 is about 27301.7195612291. The cubic root of 745383891 is about 906.6924531455.

The spelling of 745383891 in words is "seven hundred forty-five million, three hundred eighty-three thousand, eight hundred ninety-one".