1646225292 has 12 divisors (see below), whose sum is σ = 3841192376. Its totient is φ = 548741760.

The previous prime is 1646225279. The next prime is 1646225323. The reversal of 1646225292 is 2925226461.

1646225292 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1646225292.

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, 68592709 + ... + 68592732.

Almost surely, 2^1646225292 is an apocalyptic number.

1646225292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1646225292 is an abundant number, since it is smaller than the sum of its proper divisors (2194967084).

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

1646225292 is a wasteful number, since it uses less digits than its factorization.

1646225292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137185448 (or 137185446 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 1646225292 is about 40573.7019755408. The cubic root of 1646225292 is about 1180.7639628151.

The spelling of 1646225292 in words is "one billion, six hundred forty-six million, two hundred twenty-five thousand, two hundred ninety-two".