3747742640 has 60 divisors (see below), whose sum is σ = 8796405744. Its totient is φ = 1484967168.

The previous prime is 3747742639. The next prime is 3747742651. The reversal of 3747742640 is 462477473.

It is a junction number, because it is equal to n+sod(n) for n = 3747742591 and 3747742600.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 948509 + ... + 952451.

Almost surely, 2^3747742640 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 3747742640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4398202872).

3747742640 is an abundant number, since it is smaller than the sum of its proper divisors (5048663104).

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

3747742640 is a wasteful number, since it uses less digits than its factorization.

3747742640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174 (or 4059 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 44.

The square root of 3747742640 is about 61218.8095277914. The cubic root of 3747742640 is about 1553.3044507433.

The spelling of 3747742640 in words is "three billion, seven hundred forty-seven million, seven hundred forty-two thousand, six hundred forty".