745191039 has 32 divisors (see below), whose sum is σ = 1112348160. Its totient is φ = 440985600.

The previous prime is 745191023. The next prime is 745191049. The reversal of 745191039 is 930191547.

It is a happy number.

It is not a de Polignac number, because 745191039 - 2⁴ = 745191023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 745190988 and 745191006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745191049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231934 + ... + 235124.

It is an arithmetic number, because the mean of its divisors is an integer number (34760880).

Almost surely, 2^745191039 is an apocalyptic number.

745191039 is a deficient number, since it is larger than the sum of its proper divisors (367157121).

745191039 is a wasteful number, since it uses less digits than its factorization.

745191039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 745191039 is about 27298.1874673027. The cubic root of 745191039 is about 906.6142506973.

The spelling of 745191039 in words is "seven hundred forty-five million, one hundred ninety-one thousand, thirty-nine".