1868131722 has 16 divisors (see below), whose sum is σ = 3737328480. Its totient is φ = 622533072.

The previous prime is 1868131709. The next prime is 1868131747. The reversal of 1868131722 is 2271318681.

It is a super-2 number, since 2×1868131722² = 6979832261485370568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20593 + ... + 64500.

It is an arithmetic number, because the mean of its divisors is an integer number (233583030).

Almost surely, 2^1868131722 is an apocalyptic number.

1868131722 is an abundant number, since it is smaller than the sum of its proper divisors (1869196758).

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

1868131722 is a wasteful number, since it uses less digits than its factorization.

1868131722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88757.

The product of its digits is 32256, while the sum is 39.

The square root of 1868131722 is about 43221.8893848939. The cubic root of 1868131722 is about 1231.5985389559.

It can be divided in two parts, 18681 and 31722, that added together give a triangular number (50403 = T₃₁₇).

The spelling of 1868131722 in words is "one billion, eight hundred sixty-eight million, one hundred thirty-one thousand, seven hundred twenty-two".