745138383 has 64 divisors (see below), whose sum is σ = 1185408000. Its totient is φ = 411586560.

The previous prime is 745138379. The next prime is 745138391. The reversal of 745138383 is 383831547.

It is not a de Polignac number, because 745138383 - 2² = 745138379 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745138313) 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 63 ways as a sum of consecutive naturals, for example, 2134893 + ... + 2135241.

It is an arithmetic number, because the mean of its divisors is an integer number (18522000).

Almost surely, 2^745138383 is an apocalyptic number.

745138383 is a deficient number, since it is larger than the sum of its proper divisors (440269617).

745138383 is a wasteful number, since it uses less digits than its factorization.

745138383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512.

The product of its digits is 241920, while the sum is 42.

The square root of 745138383 is about 27297.2229906267. Note that the first 3 decimals coincide. The cubic root of 745138383 is about 906.5928960818.

It can be divided in two parts, 745 and 138383, that added together give a triangular number (139128 = T₅₂₇).

The spelling of 745138383 in words is "seven hundred forty-five million, one hundred thirty-eight thousand, three hundred eighty-three".