1880936640 has 392 divisors, whose sum is σ = 7335883728. Its totient is φ = 455362560.

The previous prime is 1880936639. The next prime is 1880936653. The reversal of 1880936640 is 466390881.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2565714 + ... + 2566446.

Almost surely, 2^1880936640 is an apocalyptic number.

1880936640 is a gapful number since it is divisible by the number (10) 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 1880936640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3667941864).

1880936640 is an abundant number, since it is smaller than the sum of its proper divisors (5454947088).

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

1880936640 is an equidigital number, since it uses as much as digits as its factorization.

1880936640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1880936640 is about 43369.7664277778. The cubic root of 1880936640 is about 1234.4060894504.

The spelling of 1880936640 in words is "one billion, eight hundred eighty million, nine hundred thirty-six thousand, six hundred forty".