1640576968 has 16 divisors (see below), whose sum is σ = 3098214000. Its totient is φ = 814386576.

The previous prime is 1640576953. The next prime is 1640576969. The reversal of 1640576968 is 8696750461.

It is not an unprimeable number, because it can be changed into a prime (1640576969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736558 + ... + 738781.

It is an arithmetic number, because the mean of its divisors is an integer number (193638375).

Almost surely, 2^1640576968 is an apocalyptic number.

It is an amenable number.

1640576968 is a deficient number, since it is larger than the sum of its proper divisors (1457637032).

1640576968 is a wasteful number, since it uses less digits than its factorization.

1640576968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475484 (or 1475480 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 1640576968 is about 40504.0364408290. The cubic root of 1640576968 is about 1179.4119851115.

The spelling of 1640576968 in words is "one billion, six hundred forty million, five hundred seventy-six thousand, nine hundred sixty-eight".