3722636898 has 54 divisors (see below), whose sum is σ = 8219438019. Its totient is φ = 1217668032.

The previous prime is 3722636851. The next prime is 3722636903. The reversal of 3722636898 is 8986362273.

It is a happy number.

3722636898 is a `hidden beast` number, since 372 + 263 + 6 + 8 + 9 + 8 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 3701870649 + 20766249 = 60843^2 + 4557^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=43143.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 18896536 + ... + 18896732.

Almost surely, 2^3722636898 is an apocalyptic number.

3722636898 is an abundant number, since it is smaller than the sum of its proper divisors (4496801121).

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

3722636898 is an equidigital number, since it uses as much as digits as its factorization.

3722636898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 275 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 3722636898 is about 61013.4157214624. The cubic root of 3722636898 is about 1549.8282012849.

The spelling of 3722636898 in words is "three billion, seven hundred twenty-two million, six hundred thirty-six thousand, eight hundred ninety-eight".