1950866057 has 12 divisors (see below), whose sum is σ = 2270386836. Its totient is φ = 1671425280.

The previous prime is 1950866039. The next prime is 1950866063. The reversal of 1950866057 is 7506680591.

It can be written as a sum of positive squares in 2 ways, for example, as 363321721 + 1587544336 = 19061^2 + 39844^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1950866057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1950866557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121457 + ... + 136577.

It is an arithmetic number, because the mean of its divisors is an integer number (189198903).

Almost surely, 2^1950866057 is an apocalyptic number.

It is an amenable number.

1950866057 is a deficient number, since it is larger than the sum of its proper divisors (319520779).

1950866057 is a wasteful number, since it uses less digits than its factorization.

1950866057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17768 (or 17761 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 1950866057 is about 44168.6094075872. The cubic root of 1950866057 is about 1249.5179062524.

The spelling of 1950866057 in words is "one billion, nine hundred fifty million, eight hundred sixty-six thousand, fifty-seven".