1868517036 has 36 divisors (see below), whose sum is σ = 4724850312. Its totient is φ = 622620864.

The previous prime is 1868517031. The next prime is 1868517043. The reversal of 1868517036 is 6307158681.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 1868516982 and 1868517000.

It is not an unprimeable number, because it can be changed into a prime (1868517031) 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, 120376 + ... + 135008.

It is an arithmetic number, because the mean of its divisors is an integer number (131245842).

Almost surely, 2^1868517036 is an apocalyptic number.

It is an amenable number.

1868517036 is an abundant number, since it is smaller than the sum of its proper divisors (2856333276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1868517036 is a wasteful number, since it uses less digits than its factorization.

1868517036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18190 (or 18185 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1868517036 is about 43226.3465492979. The cubic root of 1868517036 is about 1231.6832081348.

It can be divided in two parts, 18685 and 17036, that added together give a square (35721 = 189²).

The spelling of 1868517036 in words is "one billion, eight hundred sixty-eight million, five hundred seventeen thousand, thirty-six".