1957320383 has 2 divisors, whose sum is σ = 1957320384. Its totient is φ = 1957320382.

The previous prime is 1957320373. The next prime is 1957320427. The reversal of 1957320383 is 3830237591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1957320383 - 2⁴ = 1957320367 is a prime.

It is a super-2 number, since 2×1957320383² = 7662206163414533378, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1957320383.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1957320373) 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 as a sum of consecutive naturals, namely, 978660191 + 978660192.

It is an arithmetic number, because the mean of its divisors is an integer number (978660192).

Almost surely, 2^1957320383 is an apocalyptic number.

1957320383 is a deficient number, since it is larger than the sum of its proper divisors (1).

1957320383 is an equidigital number, since it uses as much as digits as its factorization.

1957320383 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 1957320383 is about 44241.6137024860. The cubic root of 1957320383 is about 1250.8943749621.

The spelling of 1957320383 in words is "one billion, nine hundred fifty-seven million, three hundred twenty thousand, three hundred eighty-three".