745375519 has 4 divisors (see below), whose sum is σ = 851857744. Its totient is φ = 638893296.

The previous prime is 745375447. The next prime is 745375549. The reversal of 745375519 is 915573547.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 745375519 - 2¹⁹ = 744851231 is a prime.

It is a super-2 number, since 2×745375519² = 1111169328649038722, 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 (745375549) 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 3 ways as a sum of consecutive naturals, for example, 53241102 + ... + 53241115.

It is an arithmetic number, because the mean of its divisors is an integer number (212964436).

Almost surely, 2^745375519 is an apocalyptic number.

745375519 is a deficient number, since it is larger than the sum of its proper divisors (106482225).

745375519 is a wasteful number, since it uses less digits than its factorization.

745375519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106482224.

The product of its digits is 661500, while the sum is 46.

The square root of 745375519 is about 27301.5662371227. The cubic root of 745375519 is about 906.6890585378.

The spelling of 745375519 in words is "seven hundred forty-five million, three hundred seventy-five thousand, five hundred nineteen".