3745639424 has 88 divisors (see below), whose sum is σ = 7852619520. Its totient is φ = 1782370304.

The previous prime is 3745639421. The next prime is 3745639441. The reversal of 3745639424 is 4249365473.

It is not an unprimeable number, because it can be changed into a prime (3745639421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8454947 + ... + 8455389.

Almost surely, 2^3745639424 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 3745639424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3926309760).

3745639424 is an abundant number, since it is smaller than the sum of its proper divisors (4106980096).

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

3745639424 is a wasteful number, since it uses less digits than its factorization.

3745639424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 827 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 47.

The square root of 3745639424 is about 61201.6292593588. The cubic root of 3745639424 is about 1553.0138272571.

The spelling of 3745639424 in words is "three billion, seven hundred forty-five million, six hundred thirty-nine thousand, four hundred twenty-four".