1188444444 has 48 divisors (see below), whose sum is σ = 3089511936. Its totient is φ = 352470400.

The previous prime is 1188444379. The next prime is 1188444457. The reversal of 1188444444 is 4444448811.

It is a happy number.

1188444444 is a modest number, since divided by 44444 gives 11884 as remainder.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 1188444396 and 1188444405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89577 + ... + 101984.

It is an arithmetic number, because the mean of its divisors is an integer number (64364832).

Almost surely, 2^1188444444 is an apocalyptic number.

It is an amenable number.

1188444444 is an abundant number, since it is smaller than the sum of its proper divisors (1901067492).

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

1188444444 is a wasteful number, since it uses less digits than its factorization.

1188444444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191626 (or 191624 counting only the distinct ones).

The product of its digits is 262144, while the sum is 42.

The square root of 1188444444 is about 34473.8225904816. The cubic root of 1188444444 is about 1059.2365583849.

The spelling of 1188444444 in words is "one billion, one hundred eighty-eight million, four hundred forty-four thousand, four hundred forty-four".