1682640956 has 6 divisors (see below), whose sum is σ = 2944621680. Its totient is φ = 841320476.

The previous prime is 1682640941. The next prime is 1682640997. The reversal of 1682640956 is 6590462861.

It is a self number, because there is not a number n which added to its sum of digits gives 1682640956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210330116 + ... + 210330123.

It is an arithmetic number, because the mean of its divisors is an integer number (490770280).

Almost surely, 2^1682640956 is an apocalyptic number.

It is an amenable number.

1682640956 is a deficient number, since it is larger than the sum of its proper divisors (1261980724).

1682640956 is a wasteful number, since it uses less digits than its factorization.

1682640956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420660243 (or 420660241 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 1682640956 is about 41020.0067771813. The cubic root of 1682640956 is about 1189.4069865039.

The spelling of 1682640956 in words is "one billion, six hundred eighty-two million, six hundred forty thousand, nine hundred fifty-six".