1397052357 has 8 divisors (see below), whose sum is σ = 1864646976. Its totient is φ = 930412992.

The previous prime is 1397052347. The next prime is 1397052359. The reversal of 1397052357 is 7532507931.

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

It is not a de Polignac number, because 1397052357 - 2⁴ = 1397052341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397052359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235393 + ... + 241254.

It is an arithmetic number, because the mean of its divisors is an integer number (233080872).

Almost surely, 2^1397052357 is an apocalyptic number.

It is an amenable number.

1397052357 is a deficient number, since it is larger than the sum of its proper divisors (467594619).

1397052357 is an equidigital number, since it uses as much as digits as its factorization.

1397052357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477627.

The product of its (nonzero) digits is 198450, while the sum is 42.

The square root of 1397052357 is about 37377.1635761731. The cubic root of 1397052357 is about 1117.9032724177.

The spelling of 1397052357 in words is "one billion, three hundred ninety-seven million, fifty-two thousand, three hundred fifty-seven".