745374431 has 8 divisors (see below), whose sum is σ = 748595904. Its totient is φ = 742160160.

The previous prime is 745374419. The next prime is 745374449. The reversal of 745374431 is 134473547.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 745374431 - 2¹⁸ = 745112287 is a prime.

It is a super-2 number, since 2×745374431² = 1111166084777147522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745374031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311861 + ... + 314241.

It is an arithmetic number, because the mean of its divisors is an integer number (93574488).

Almost surely, 2^745374431 is an apocalyptic number.

745374431 is a deficient number, since it is larger than the sum of its proper divisors (3221473).

745374431 is a wasteful number, since it uses less digits than its factorization.

745374431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601.

The product of its digits is 141120, while the sum is 38.

The square root of 745374431 is about 27301.5463115187. The cubic root of 745374431 is about 906.6886173829.

The spelling of 745374431 in words is "seven hundred forty-five million, three hundred seventy-four thousand, four hundred thirty-one".