1011877857 has 12 divisors (see below), whose sum is σ = 1464041124. Its totient is φ = 673459200.

The previous prime is 1011877843. The next prime is 1011877873. The reversal of 1011877857 is 7587781101.

It can be written as a sum of positive squares in 2 ways, for example, as 574273296 + 437604561 = 23964^2 + 20919^2 .

It is not a de Polignac number, because 1011877857 - 2⁶ = 1011877793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011877807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88128 + ... + 98945.

It is an arithmetic number, because the mean of its divisors is an integer number (122003427).

Almost surely, 2^1011877857 is an apocalyptic number.

It is an amenable number.

1011877857 is a deficient number, since it is larger than the sum of its proper divisors (452163267).

1011877857 is a wasteful number, since it uses less digits than its factorization.

1011877857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187680 (or 187677 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 45.

The square root of 1011877857 is about 31810.0276170896. The cubic root of 1011877857 is about 1003.9437123542.

The spelling of 1011877857 in words is "one billion, eleven million, eight hundred seventy-seven thousand, eight hundred fifty-seven".