1950001957 has 2 divisors, whose sum is σ = 1950001958. Its totient is φ = 1950001956.

The previous prime is 1950001913. The next prime is 1950001973. The reversal of 1950001957 is 7591000591.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1942958241 + 7043716 = 44079^2 + 2654^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1950001957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1950001997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975000978 + 975000979.

It is an arithmetic number, because the mean of its divisors is an integer number (975000979).

Almost surely, 2^1950001957 is an apocalyptic number.

It is an amenable number.

1950001957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1950001957 is an equidigital number, since it uses as much as digits as its factorization.

1950001957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14175, while the sum is 37.

The square root of 1950001957 is about 44158.8264902952. The cubic root of 1950001957 is about 1249.3333954005. Note that the first 4 decimals are identical.

The spelling of 1950001957 in words is "one billion, nine hundred fifty million, one thousand, nine hundred fifty-seven".