1641809232 has 60 divisors (see below), whose sum is σ = 5251186720. Its totient is φ = 469088064.

The previous prime is 1641809167. The next prime is 1641809263. The reversal of 1641809232 is 2329081461.

1641809232 is a `hidden beast` number, since 1 + 6 + 418 + 0 + 9 + 232 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 813382 + ... + 815397.

Almost surely, 2^1641809232 is an apocalyptic number.

1641809232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1641809232 is an abundant number, since it is smaller than the sum of its proper divisors (3609377488).

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

1641809232 is a wasteful number, since it uses less digits than its factorization.

1641809232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628800 (or 1628791 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1641809232 is about 40519.2452052108. The cubic root of 1641809232 is about 1179.7072030405.

The spelling of 1641809232 in words is "one billion, six hundred forty-one million, eight hundred nine thousand, two hundred thirty-two".