1392172913 has 2 divisors, whose sum is σ = 1392172914. Its totient is φ = 1392172912.

The previous prime is 1392172907. The next prime is 1392172919. The reversal of 1392172913 is 3192712931.

It is a balanced prime because it is at equal distance from previous prime (1392172907) and next prime (1392172919).

It can be written as a sum of positive squares in only one way, i.e., 1391066209 + 1106704 = 37297^2 + 1052^2 .

It is a cyclic number.

It is not a de Polignac number, because 1392172913 - 2⁸ = 1392172657 is a prime.

It is not a weakly prime, because it can be changed into another prime (1392172919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696086456 + 696086457.

It is an arithmetic number, because the mean of its divisors is an integer number (696086457).

Almost surely, 2^1392172913 is an apocalyptic number.

It is an amenable number.

1392172913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392172913 is an equidigital number, since it uses as much as digits as its factorization.

1392172913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 38.

The square root of 1392172913 is about 37311.8334178314. The cubic root of 1392172913 is about 1116.6002648667.

The spelling of 1392172913 in words is "one billion, three hundred ninety-two million, one hundred seventy-two thousand, nine hundred thirteen".