3642011640 has 64 divisors (see below), whose sum is σ = 12140042400. Its totient is φ = 971202816.

The previous prime is 3642011629. The next prime is 3642011641. The reversal of 3642011640 is 461102463.

3642011640 is a `hidden beast` number, since 3 + 6 + 4 + 2 + 0 + 11 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3642011641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1685037 + ... + 1687196.

Almost surely, 2^3642011640 is an apocalyptic number.

3642011640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3642011640 is an abundant number, since it is smaller than the sum of its proper divisors (8498030760).

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

3642011640 is a wasteful number, since it uses less digits than its factorization.

3642011640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3372253 (or 3372243 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 3642011640 is about 60349.0815174514. The cubic root of 3642011640 is about 1538.5576589355.

The spelling of 3642011640 in words is "three billion, six hundred forty-two million, eleven thousand, six hundred forty".