1640590848 has 400 divisors, whose sum is σ = 5614796880. Its totient is φ = 472449024.

The previous prime is 1640590829. The next prime is 1640590879. The reversal of 1640590848 is 8480950461.

1640590848 is a `hidden beast` number, since 16 + 4 + 0 + 590 + 8 + 48 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9165223 + ... + 9165401.

Almost surely, 2^1640590848 is an apocalyptic number.

1640590848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1640590848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2807398440).

1640590848 is an abundant number, since it is smaller than the sum of its proper divisors (3974206032).

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

1640590848 is a wasteful number, since it uses less digits than its factorization.

1640590848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 1640590848 is about 40504.2077814145. The cubic root of 1640590848 is about 1179.4153112161.

The spelling of 1640590848 in words is "one billion, six hundred forty million, five hundred ninety thousand, eight hundred forty-eight".