1979507880 has 768 divisors, whose sum is σ = 8491392000. Its totient is φ = 397393920.

The previous prime is 1979507867. The next prime is 1979507909. The reversal of 1979507880 is 887059791.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 48280660 + ... + 48280700.

It is an arithmetic number, because the mean of its divisors is an integer number (11056500).

Almost surely, 2^1979507880 is an apocalyptic number.

1979507880 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 1979507880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4245696000).

1979507880 is an abundant number, since it is smaller than the sum of its proper divisors (6511884120).

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

1979507880 is a wasteful number, since it uses less digits than its factorization.

1979507880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The square root of 1979507880 is about 44491.6607916585. The cubic root of 1979507880 is about 1255.6031935818.

The spelling of 1979507880 in words is "one billion, nine hundred seventy-nine million, five hundred seven thousand, eight hundred eighty".