1640060250 has 32 divisors (see below), whose sum is σ = 4093592256. Its totient is φ = 437349200.

The previous prime is 1640060231. The next prime is 1640060251. The reversal of 1640060250 is 520600461.

It is a self number, because there is not a number n which added to its sum of digits gives 1640060250.

It is not an unprimeable number, because it can be changed into a prime (1640060251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1092624 + ... + 1094123.

It is an arithmetic number, because the mean of its divisors is an integer number (127924758).

Almost surely, 2^1640060250 is an apocalyptic number.

1640060250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1640060250 is an abundant number, since it is smaller than the sum of its proper divisors (2453532006).

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

1640060250 is a wasteful number, since it uses less digits than its factorization.

1640060250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2186767 (or 2186757 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1640060250 is about 40497.6573396536. The cubic root of 1640060250 is about 1179.2881491264.

The spelling of 1640060250 in words is "one billion, six hundred forty million, sixty thousand, two hundred fifty".