1188924980 has 24 divisors (see below), whose sum is σ = 2518842312. Its totient is φ = 471360512.

The previous prime is 1188924941. The next prime is 1188925091. The reversal of 1188924980 is 894298811.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 146797456 + 1042127524 = 12116^2 + 32282^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260777 + ... + 265296.

It is an arithmetic number, because the mean of its divisors is an integer number (104951763).

Almost surely, 2^1188924980 is an apocalyptic number.

1188924980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1188924980 is an abundant number, since it is smaller than the sum of its proper divisors (1329917332).

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

1188924980 is a wasteful number, since it uses less digits than its factorization.

1188924980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526195 (or 526193 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 50.

The square root of 1188924980 is about 34480.7914642341. The cubic root of 1188924980 is about 1059.3793031618.

The spelling of 1188924980 in words is "one billion, one hundred eighty-eight million, nine hundred twenty-four thousand, nine hundred eighty".