1640967006 has 32 divisors (see below), whose sum is σ = 3752805888. Its totient is φ = 468594720.

The previous prime is 1640966969. The next prime is 1640967017. The reversal of 1640967006 is 6007690461.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76711 + ... + 95741.

It is an arithmetic number, because the mean of its divisors is an integer number (117275184).

Almost surely, 2^1640967006 is an apocalyptic number.

1640967006 is an abundant number, since it is smaller than the sum of its proper divisors (2111838882).

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

1640967006 is a wasteful number, since it uses less digits than its factorization.

1640967006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21096.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 1640967006 is about 40508.8509587720. The cubic root of 1640967006 is about 1179.5054439068.

The spelling of 1640967006 in words is "one billion, six hundred forty million, nine hundred sixty-seven thousand, six".