1187679888 has 80 divisors (see below), whose sum is σ = 3557331840. Its totient is φ = 378677376.

The previous prime is 1187679887. The next prime is 1187679901. The reversal of 1187679888 is 8889767811.

It is not an unprimeable number, because it can be changed into a prime (1187679887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49831 + ... + 69702.

It is an arithmetic number, because the mean of its divisors is an integer number (44466648).

Almost surely, 2^1187679888 is an apocalyptic number.

1187679888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1187679888 is an abundant number, since it is smaller than the sum of its proper divisors (2369651952).

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

1187679888 is a wasteful number, since it uses less digits than its factorization.

1187679888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119573 (or 119561 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 63.

The square root of 1187679888 is about 34462.7318708195. The cubic root of 1187679888 is about 1059.0093652118.

The spelling of 1187679888 in words is "one billion, one hundred eighty-seven million, six hundred seventy-nine thousand, eight hundred eighty-eight".