3749309856 has 240 divisors, whose sum is σ = 11706000768. Its totient is φ = 1174694400.

The previous prime is 3749309831. The next prime is 3749309869. The reversal of 3749309856 is 6589039473.

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

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3636061 + ... + 3637091.

Almost surely, 2^3749309856 is an apocalyptic number.

3749309856 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 3749309856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5853000384).

3749309856 is an abundant number, since it is smaller than the sum of its proper divisors (7956690912).

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

3749309856 is a wasteful number, since it uses less digits than its factorization.

3749309856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The square root of 3749309856 is about 61231.6083081279. The cubic root of 3749309856 is about 1553.5209387797.

The spelling of 3749309856 in words is "three billion, seven hundred forty-nine million, three hundred nine thousand, eight hundred fifty-six".