745924378 has 4 divisors (see below), whose sum is σ = 1118886570. Its totient is φ = 372962188.

The previous prime is 745924369. The next prime is 745924391. The reversal of 745924378 is 873429547.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 697857889 + 48066489 = 26417^2 + 6933^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 186481093 + ... + 186481096.

Almost surely, 2^745924378 is an apocalyptic number.

745924378 is a deficient number, since it is larger than the sum of its proper divisors (372962192).

745924378 is a wasteful number, since it uses less digits than its factorization.

745924378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372962191.

The product of its digits is 1693440, while the sum is 49.

The square root of 745924378 is about 27311.6161733428. The cubic root of 745924378 is about 906.9115514693.

The spelling of 745924378 in words is "seven hundred forty-five million, nine hundred twenty-four thousand, three hundred seventy-eight".