1640581104 has 40 divisors (see below), whose sum is σ = 4261605712. Its totient is φ = 543836160.

The previous prime is 1640581091. The next prime is 1640581139. The reversal of 1640581104 is 4011850461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85729 + ... + 103104.

Almost surely, 2^1640581104 is an apocalyptic number.

It is an amenable number.

1640581104 is an abundant number, since it is smaller than the sum of its proper divisors (2621024608).

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

1640581104 is a wasteful number, since it uses less digits than its factorization.

1640581104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189025 (or 189019 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 1640581104 is about 40504.0874974366. The cubic root of 1640581104 is about 1179.4129762351.

The spelling of 1640581104 in words is "one billion, six hundred forty million, five hundred eighty-one thousand, one hundred four".