1641492656 has 20 divisors (see below), whose sum is σ = 3282986304. Its totient is φ = 794270400.

The previous prime is 1641492649. The next prime is 1641492683. The reversal of 1641492656 is 6562941461.

1641492656 is an admirable number.

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, 1654235 + ... + 1655226.

Almost surely, 2^1641492656 is an apocalyptic number.

1641492656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1641492656 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1641492656 is a wasteful number, since it uses less digits than its factorization.

1641492656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309500 (or 3309494 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 1641492656 is about 40515.3385275256. The cubic root of 1641492656 is about 1179.6313738908.

The spelling of 1641492656 in words is "one billion, six hundred forty-one million, four hundred ninety-two thousand, six hundred fifty-six".