1640959132 has 12 divisors (see below), whose sum is σ = 2872414720. Its totient is φ = 820269216.

The previous prime is 1640959123. The next prime is 1640959157. The reversal of 1640959132 is 2319590461.

It is a congruent 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, 34332 + ... + 66787.

Almost surely, 2^1640959132 is an apocalyptic number.

It is an amenable number.

1640959132 is a deficient number, since it is larger than the sum of its proper divisors (1231455588).

1640959132 is a wasteful number, since it uses less digits than its factorization.

1640959132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105180 (or 105178 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 1640959132 is about 40508.7537700186. The cubic root of 1640959132 is about 1179.5035573280.

The spelling of 1640959132 in words is "one billion, six hundred forty million, nine hundred fifty-nine thousand, one hundred thirty-two".