1957477999 has 2 divisors, whose sum is σ = 1957478000. Its totient is φ = 1957477998.

The previous prime is 1957477961. The next prime is 1957478011. The reversal of 1957477999 is 9997747591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1957477999 - 2⁷ = 1957477871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1957477909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978738999 + 978739000.

It is an arithmetic number, because the mean of its divisors is an integer number (978739000).

Almost surely, 2^1957477999 is an apocalyptic number.

1957477999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1957477999 is an equidigital number, since it uses as much as digits as its factorization.

1957477999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45008460, while the sum is 67.

The square root of 1957477999 is about 44243.3949759735. The cubic root of 1957477999 is about 1250.9279507421.

The spelling of 1957477999 in words is "one billion, nine hundred fifty-seven million, four hundred seventy-seven thousand, nine hundred ninety-nine".