3749219136 has 140 divisors (see below), whose sum is σ = 11968987492. Its totient is φ = 1153585152.

The previous prime is 3749219119. The next prime is 3749219161. The reversal of 3749219136 is 6319129473.

3749219136 is a `hidden beast` number, since 374 + 92 + 191 + 3 + 6 = 666.

3749219136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 472801536 + 3276417600 = 21744^2 + 57240^2 .

It is a nialpdrome in base 12.

It is a zygodrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 3749219091 and 3749219100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 39576 + ... + 95208.

Almost surely, 2^3749219136 is an apocalyptic number.

3749219136 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 3749219136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5984493746).

3749219136 is an abundant number, since it is smaller than the sum of its proper divisors (8219768356).

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

3749219136 is a wasteful number, since it uses less digits than its factorization.

3749219136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55670 (or 55651 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 3749219136 is about 61230.8675097781. The cubic root of 3749219136 is about 1553.5084087798.

The spelling of 3749219136 in words is "three billion, seven hundred forty-nine million, two hundred nineteen thousand, one hundred thirty-six".