1391652745 has 16 divisors (see below), whose sum is σ = 1910199168. Its totient is φ = 953452800.

The previous prime is 1391652737. The next prime is 1391652749. The reversal of 1391652745 is 5472561931.

It is not a de Polignac number, because 1391652745 - 2³ = 1391652737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1391652749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25482 + ... + 58588.

It is an arithmetic number, because the mean of its divisors is an integer number (119387448).

Almost surely, 2^1391652745 is an apocalyptic number.

It is an amenable number.

1391652745 is a deficient number, since it is larger than the sum of its proper divisors (518546423).

1391652745 is a wasteful number, since it uses less digits than its factorization.

1391652745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34320.

The product of its digits is 226800, while the sum is 43.

The square root of 1391652745 is about 37304.8622166066. The cubic root of 1391652745 is about 1116.4611796341.

The spelling of 1391652745 in words is "one billion, three hundred ninety-one million, six hundred fifty-two thousand, seven hundred forty-five".