1397533965 has 8 divisors (see below), whose sum is σ = 2236054368. Its totient is φ = 745351440.

The previous prime is 1397533933. The next prime is 1397534023. The reversal of 1397533965 is 5693357931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1397533965 - 2⁵ = 1397533933 is a prime.

It is a congruent 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, 46584451 + ... + 46584480.

It is an arithmetic number, because the mean of its divisors is an integer number (279506796).

Almost surely, 2^1397533965 is an apocalyptic number.

1397533965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1397533965 is a deficient number, since it is larger than the sum of its proper divisors (838520403).

1397533965 is an equidigital number, since it uses as much as digits as its factorization.

1397533965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93168939.

The product of its digits is 2296350, while the sum is 51.

The square root of 1397533965 is about 37383.6055644717. The cubic root of 1397533965 is about 1118.0317164953.

The spelling of 1397533965 in words is "one billion, three hundred ninety-seven million, five hundred thirty-three thousand, nine hundred sixty-five".