745133751 has 12 divisors (see below), whose sum is σ = 1076545080. Its totient is φ = 496644720.

The previous prime is 745133707. The next prime is 745133771. The reversal of 745133751 is 157331547.

745133751 is a `hidden beast` number, since 74 + 513 + 3 + 75 + 1 = 666.

It is not a de Polignac number, because 745133751 - 2⁶ = 745133687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745133771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62380 + ... + 73358.

It is an arithmetic number, because the mean of its divisors is an integer number (89712090).

Almost surely, 2^745133751 is an apocalyptic number.

745133751 is a deficient number, since it is larger than the sum of its proper divisors (331411329).

745133751 is a wasteful number, since it uses less digits than its factorization.

745133751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18526 (or 18523 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 745133751 is about 27297.1381466996. The cubic root of 745133751 is about 906.5910175283.

The spelling of 745133751 in words is "seven hundred forty-five million, one hundred thirty-three thousand, seven hundred fifty-one".