3718494640 has 320 divisors, whose sum is σ = 10879303680. Its totient is φ = 1154165760.

The previous prime is 3718494613. The next prime is 3718494683. The reversal of 3718494640 is 464948173.

3718494640 = T₇₂₄₅ + T₇₂₄₆ + ... + T₇₃₈₃.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26751691 + ... + 26751829.

It is an arithmetic number, because the mean of its divisors is an integer number (33997824).

Almost surely, 2^3718494640 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 3718494640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5439651840).

3718494640 is an abundant number, since it is smaller than the sum of its proper divisors (7160809040).

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

3718494640 is a wasteful number, since it uses less digits than its factorization.

3718494640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 3718494640 is about 60979.4608044381. The cubic root of 3718494640 is about 1549.2531455686.

The spelling of 3718494640 in words is "three billion, seven hundred eighteen million, four hundred ninety-four thousand, six hundred forty".