1640575596 has 72 divisors (see below), whose sum is σ = 4429176640. Its totient is φ = 470970720.

The previous prime is 1640575571. The next prime is 1640575609. The reversal of 1640575596 is 6955750461.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2146 + ... + 57321.

Almost surely, 2^1640575596 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1640575596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2214588320).

1640575596 is an abundant number, since it is smaller than the sum of its proper divisors (2788601044).

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

1640575596 is a wasteful number, since it uses less digits than its factorization.

1640575596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59515 (or 59502 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 48.

The square root of 1640575596 is about 40504.0195042418. The cubic root of 1640575596 is about 1179.4116563341.

It can be divided in two parts, 164057 and 5596, that added together give a triangular number (169653 = T₅₈₂).

The spelling of 1640575596 in words is "one billion, six hundred forty million, five hundred seventy-five thousand, five hundred ninety-six".