1853638064 has 10 divisors (see below), whose sum is σ = 3591423780. Its totient is φ = 926819024.

The previous prime is 1853638019. The next prime is 1853638069. The reversal of 1853638064 is 4608363581.

It is not an unprimeable number, because it can be changed into a prime (1853638069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57926174 + ... + 57926205.

It is an arithmetic number, because the mean of its divisors is an integer number (359142378).

Almost surely, 2^1853638064 is an apocalyptic number.

It is an amenable number.

1853638064 is a deficient number, since it is larger than the sum of its proper divisors (1737785716).

1853638064 is a wasteful number, since it uses less digits than its factorization.

1853638064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115852387 (or 115852381 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 1853638064 is about 43053.8971987438. The cubic root of 1853638064 is about 1228.4052003795.

The spelling of 1853638064 in words is "one billion, eight hundred fifty-three million, six hundred thirty-eight thousand, sixty-four".