3722719986 has 20 divisors (see below), whose sum is σ = 8341650702. Its totient is φ = 1240906608.

The previous prime is 3722719967. The next prime is 3722720069. The reversal of 3722719986 is 6899172273.

3722719986 is a `hidden beast` number, since 372 + 2 + 7 + 199 + 86 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2733302961 + 989417025 = 52281^2 + 31455^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11489715 + ... + 11490038.

Almost surely, 2^3722719986 is an apocalyptic number.

3722719986 is an abundant number, since it is smaller than the sum of its proper divisors (4618930716).

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

3722719986 is a wasteful number, since it uses less digits than its factorization.

3722719986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22979767 (or 22979758 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 3722719986 is about 61014.0966170933. The cubic root of 3722719986 is about 1549.8397317467.

The spelling of 3722719986 in words is "three billion, seven hundred twenty-two million, seven hundred nineteen thousand, nine hundred eighty-six".