3642740388 has 36 divisors (see below), whose sum is σ = 10523472960. Its totient is φ = 1040782896.

The previous prime is 3642740377. The next prime is 3642740389. The reversal of 3642740388 is 8830472463.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (3642740389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7227408 + ... + 7227911.

Almost surely, 2^3642740388 is an apocalyptic number.

It is an amenable number.

3642740388 is an abundant number, since it is smaller than the sum of its proper divisors (6880732572).

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

3642740388 is a wasteful number, since it uses less digits than its factorization.

3642740388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14455336 (or 14455331 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The square root of 3642740388 is about 60355.1189875391. The cubic root of 3642740388 is about 1538.6602712783.

The spelling of 3642740388 in words is "three billion, six hundred forty-two million, seven hundred forty thousand, three hundred eighty-eight".