1878997680 has 120 divisors (see below), whose sum is σ = 7211791392. Its totient is φ = 429484032.

The previous prime is 1878997669. The next prime is 1878997693. The reversal of 1878997680 is 867998781.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (63).

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, 181369 + ... + 191448.

Almost surely, 2^1878997680 is an apocalyptic number.

1878997680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1878997680 is an abundant number, since it is smaller than the sum of its proper divisors (5332793712).

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

1878997680 is a wasteful number, since it uses less digits than its factorization.

1878997680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372843 (or 372834 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 63.

The square root of 1878997680 is about 43347.4068428551. The cubic root of 1878997680 is about 1233.9817818857.

The spelling of 1878997680 in words is "one billion, eight hundred seventy-eight million, nine hundred ninety-seven thousand, six hundred eighty".