1957133377 has 2 divisors, whose sum is σ = 1957133378. Its totient is φ = 1957133376.

The previous prime is 1957133341. The next prime is 1957133393. The reversal of 1957133377 is 7733317591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1920542976 + 36590401 = 43824^2 + 6049^2 .

It is a cyclic number.

It is not a de Polignac number, because 1957133377 - 2¹⁵ = 1957100609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1957113377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978566688 + 978566689.

It is an arithmetic number, because the mean of its divisors is an integer number (978566689).

Almost surely, 2^1957133377 is an apocalyptic number.

It is an amenable number.

1957133377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1957133377 is an equidigital number, since it uses as much as digits as its factorization.

1957133377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 416745, while the sum is 46.

The square root of 1957133377 is about 44239.5001893105. The cubic root of 1957133377 is about 1250.8545361080.

The spelling of 1957133377 in words is "one billion, nine hundred fifty-seven million, one hundred thirty-three thousand, three hundred seventy-seven".