1640332050 has 96 divisors (see below), whose sum is σ = 4683033600. Its totient is φ = 372202560.

The previous prime is 1640332039. The next prime is 1640332061. The reversal of 1640332050 is 502330461.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1640332039) and next prime (1640332061).

It is a self number, because there is not a number n which added to its sum of digits gives 1640332050.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140331 + ... + 151569.

It is an arithmetic number, because the mean of its divisors is an integer number (48781600).

Almost surely, 2^1640332050 is an apocalyptic number.

1640332050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1640332050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2341516800).

1640332050 is an abundant number, since it is smaller than the sum of its proper divisors (3042701550).

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

1640332050 is a wasteful number, since it uses less digits than its factorization.

1640332050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11400 (or 11395 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1640332050 is about 40501.0129502955. The cubic root of 1640332050 is about 1179.3532916140.

The spelling of 1640332050 in words is "one billion, six hundred forty million, three hundred thirty-two thousand, fifty".