3749862636 has 72 divisors (see below), whose sum is σ = 10250624384. Its totient is φ = 1148981760.

The previous prime is 3749862619. The next prime is 3749862647. The reversal of 3749862636 is 6362689473.

3749862636 is a `hidden beast` number, since 3 + 7 + 4 + 9 + 8 + 626 + 3 + 6 = 666.

It is a super-2 number, since 2×3749862636² = 28122939577737736992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96165 + ... + 129411.

Almost surely, 2^3749862636 is an apocalyptic number.

3749862636 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3749862636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5125312192).

3749862636 is an abundant number, since it is smaller than the sum of its proper divisors (6500761748).

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

3749862636 is a wasteful number, since it uses less digits than its factorization.

3749862636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33511 (or 33506 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 54.

The square root of 3749862636 is about 61236.1219869449. The cubic root of 3749862636 is about 1553.5972828837.

The spelling of 3749862636 in words is "three billion, seven hundred forty-nine million, eight hundred sixty-two thousand, six hundred thirty-six".