1188694144 has 32 divisors (see below), whose sum is σ = 2583386640. Its totient is φ = 540314880.

The previous prime is 1188694139. The next prime is 1188694183. The reversal of 1188694144 is 4414968811.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 1188694094 and 1188694103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420714 + ... + 423529.

Almost surely, 2^1188694144 is an apocalyptic number.

It is an amenable number.

1188694144 is an abundant number, since it is smaller than the sum of its proper divisors (1394692496).

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

1188694144 is an equidigital number, since it uses as much as digits as its factorization.

1188694144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844268 (or 844256 counting only the distinct ones).

The product of its digits is 221184, while the sum is 46.

The square root of 1188694144 is about 34477.4439887878. The cubic root of 1188694144 is about 1059.3107373809.

It can be divided in two parts, 11886 and 94144, that added together give a triangular number (106030 = T₄₆₀).

The spelling of 1188694144 in words is "one billion, one hundred eighty-eight million, six hundred ninety-four thousand, one hundred forty-four".