1397005913 has 4 divisors (see below), whose sum is σ = 1470532560. Its totient is φ = 1323479268.

The previous prime is 1397005879. The next prime is 1397005937. The reversal of 1397005913 is 3195007931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3195007931 = 17 ⋅187941643.

It is a cyclic number.

It is not a de Polignac number, because 1397005913 - 2⁶ = 1397005849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1397005513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36763295 + ... + 36763332.

It is an arithmetic number, because the mean of its divisors is an integer number (367633140).

Almost surely, 2^1397005913 is an apocalyptic number.

It is an amenable number.

1397005913 is a deficient number, since it is larger than the sum of its proper divisors (73526647).

1397005913 is an equidigital number, since it uses as much as digits as its factorization.

1397005913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73526646.

The product of its (nonzero) digits is 25515, while the sum is 38.

The square root of 1397005913 is about 37376.5422825601. The cubic root of 1397005913 is about 1117.8908843172.

The spelling of 1397005913 in words is "one billion, three hundred ninety-seven million, five thousand, nine hundred thirteen".