1868737057 has 4 divisors (see below), whose sum is σ = 2038622256. Its totient is φ = 1698851860.

The previous prime is 1868737037. The next prime is 1868737063. The reversal of 1868737057 is 7507378681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1868737057 - 2⁷ = 1868736929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1868736995 and 1868737013.

It is not an unprimeable number, because it can be changed into a prime (1868737027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84942583 + ... + 84942604.

It is an arithmetic number, because the mean of its divisors is an integer number (509655564).

Almost surely, 2^1868737057 is an apocalyptic number.

It is an amenable number.

1868737057 is a deficient number, since it is larger than the sum of its proper divisors (169885199).

1868737057 is a wasteful number, since it uses less digits than its factorization.

1868737057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169885198.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The square root of 1868737057 is about 43228.8914616140. The cubic root of 1868737057 is about 1231.7315504886.

The spelling of 1868737057 in words is "one billion, eight hundred sixty-eight million, seven hundred thirty-seven thousand, fifty-seven".