1392731201 has 2 divisors, whose sum is σ = 1392731202. Its totient is φ = 1392731200.

The previous prime is 1392731147. The next prime is 1392731209. The reversal of 1392731201 is 1021372931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1006412176 + 386319025 = 31724^2 + 19655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1392731201 - 2¹⁰ = 1392730177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1392731209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696365600 + 696365601.

It is an arithmetic number, because the mean of its divisors is an integer number (696365601).

Almost surely, 2^1392731201 is an apocalyptic number.

It is an amenable number.

1392731201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392731201 is an equidigital number, since it uses as much as digits as its factorization.

1392731201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 1392731201 is about 37319.3140478225. The cubic root of 1392731201 is about 1116.7495042827.

The spelling of 1392731201 in words is "one billion, three hundred ninety-two million, seven hundred thirty-one thousand, two hundred one".