1957133369 has 4 divisors (see below), whose sum is σ = 1957486080. Its totient is φ = 1956780660.

The previous prime is 1957133341. The next prime is 1957133377. The reversal of 1957133369 is 9633317591.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-1957133369 is a prime.

It is a super-2 number, since 2×1957133369² = 7660742048106580322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1957133329) 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, 167897 + ... + 179174.

It is an arithmetic number, because the mean of its divisors is an integer number (489371520).

Almost surely, 2^1957133369 is an apocalyptic number.

It is an amenable number.

1957133369 is a deficient number, since it is larger than the sum of its proper divisors (352711).

1957133369 is an equidigital number, since it uses as much as digits as its factorization.

1957133369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352710.

The product of its digits is 459270, while the sum is 47.

The square root of 1957133369 is about 44239.5000988935. The cubic root of 1957133369 is about 1250.8545344036.

The spelling of 1957133369 in words is "one billion, nine hundred fifty-seven million, one hundred thirty-three thousand, three hundred sixty-nine".