1375193957 has 4 divisors (see below), whose sum is σ = 1376120256. Its totient is φ = 1374267660.

The previous prime is 1375193933. The next prime is 1375194013. The reversal of 1375193957 is 7593915731.

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.

It is a cyclic number.

It is not a de Polignac number, because 1375193957 - 2¹² = 1375189861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375193917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460919 + ... + 463892.

It is an arithmetic number, because the mean of its divisors is an integer number (344030064).

Almost surely, 2^1375193957 is an apocalyptic number.

It is an amenable number.

1375193957 is a deficient number, since it is larger than the sum of its proper divisors (926299).

1375193957 is an equidigital number, since it uses as much as digits as its factorization.

1375193957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926298.

The product of its digits is 893025, while the sum is 50.

The square root of 1375193957 is about 37083.6076589104. The cubic root of 1375193957 is about 1112.0423284635.

The spelling of 1375193957 in words is "one billion, three hundred seventy-five million, one hundred ninety-three thousand, nine hundred fifty-seven".