745173145 has 8 divisors (see below), whose sum is σ = 902565504. Its totient is φ = 590566704.

The previous prime is 745173139. The next prime is 745173157. The reversal of 745173145 is 541371547.

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 745173145 - 2¹⁹ = 744648857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695889 + ... + 696958.

It is an arithmetic number, because the mean of its divisors is an integer number (112820688).

Almost surely, 2^745173145 is an apocalyptic number.

It is an amenable number.

745173145 is a deficient number, since it is larger than the sum of its proper divisors (157392359).

745173145 is a wasteful number, since it uses less digits than its factorization.

745173145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392959.

The product of its digits is 58800, while the sum is 37.

The square root of 745173145 is about 27297.8597146370. The cubic root of 745173145 is about 906.6069939071.

The spelling of 745173145 in words is "seven hundred forty-five million, one hundred seventy-three thousand, one hundred forty-five".