3772638156 has 96 divisors (see below), whose sum is σ = 10282567680. Its totient is φ = 1054220544.

The previous prime is 3772638143. The next prime is 3772638173. The reversal of 3772638156 is 6518362773.

It is a super-2 number, since 2×3772638156² = 28465597312214160672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1632730 + ... + 1635038.

It is an arithmetic number, because the mean of its divisors is an integer number (107110080).

Almost surely, 2^3772638156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3772638156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5141283840).

3772638156 is an abundant number, since it is smaller than the sum of its proper divisors (6509929524).

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

3772638156 is a wasteful number, since it uses less digits than its factorization.

3772638156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743 (or 2741 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 48.

The square root of 3772638156 is about 61421.8052160631. The cubic root of 3772638156 is about 1556.7362947171.

The spelling of 3772638156 in words is "three billion, seven hundred seventy-two million, six hundred thirty-eight thousand, one hundred fifty-six".