1646896956 has 24 divisors (see below), whose sum is σ = 3889060224. Its totient is φ = 542351280.

The previous prime is 1646896949. The next prime is 1646896957. The reversal of 1646896956 is 6596986461.

It is a self number, because there is not a number n which added to its sum of digits gives 1646896956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1646896957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 825760 + ... + 827751.

It is an arithmetic number, because the mean of its divisors is an integer number (162044176).

Almost surely, 2^1646896956 is an apocalyptic number.

It is an amenable number.

1646896956 is an abundant number, since it is smaller than the sum of its proper divisors (2242163268).

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

1646896956 is a wasteful number, since it uses less digits than its factorization.

1646896956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653601 (or 1653599 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 60.

The square root of 1646896956 is about 40581.9782169376. The cubic root of 1646896956 is about 1180.9245258550.

The spelling of 1646896956 in words is "one billion, six hundred forty-six million, eight hundred ninety-six thousand, nine hundred fifty-six".