4642640464 has 40 divisors (see below), whose sum is σ = 11214692928. Its totient is φ = 1808820480.

The previous prime is 4642640461. The next prime is 4642640503. The reversal of 4642640464 is 4640462464.

It is a happy number.

It is a super-2 number, since 2×4642640464² = 43108220955940270592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4642640461) 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, 1882957 + ... + 1885420.

Almost surely, 2^4642640464 is an apocalyptic number.

4642640464 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4642640464 is an abundant number, since it is smaller than the sum of its proper divisors (6572052464).

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

4642640464 is a wasteful number, since it uses less digits than its factorization.

4642640464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768403 (or 3768397 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 40.

The square root of 4642640464 is about 68136.9243802507. The cubic root of 4642640464 is about 1668.2265064755.

The spelling of 4642640464 in words is "four billion, six hundred forty-two million, six hundred forty thousand, four hundred sixty-four".