1640120132 has 12 divisors (see below), whose sum is σ = 3280240320. Its totient is φ = 702908616.

The previous prime is 1640120129. The next prime is 1640120149. The reversal of 1640120132 is 2310210461.

1640120132 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29287832 + ... + 29287887.

It is an arithmetic number, because the mean of its divisors is an integer number (273353360).

Almost surely, 2^1640120132 is an apocalyptic number.

It is an amenable number.

1640120132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1640120132 is a wasteful number, since it uses less digits than its factorization.

1640120132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58575730 (or 58575728 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1640120132 is about 40498.3966596210. The cubic root of 1640120132 is about 1179.3025017034.

Adding to 1640120132 its reverse (2310210461), we get a palindrome (3950330593).

The spelling of 1640120132 in words is "one billion, six hundred forty million, one hundred twenty thousand, one hundred thirty-two".