1188945156 has 24 divisors (see below), whose sum is σ = 3170520640. Its totient is φ = 339698592.

The previous prime is 1188945137. The next prime is 1188945157. The reversal of 1188945156 is 6515498811.

It is not an unprimeable number, because it can be changed into a prime (1188945157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7076971 + ... + 7077138.

Almost surely, 2^1188945156 is an apocalyptic number.

It is an amenable number.

1188945156 is an abundant number, since it is smaller than the sum of its proper divisors (1981575484).

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

1188945156 is a wasteful number, since it uses less digits than its factorization.

1188945156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14154123 (or 14154121 counting only the distinct ones).

The product of its digits is 345600, while the sum is 48.

The square root of 1188945156 is about 34481.0840316832. The cubic root of 1188945156 is about 1059.3852956666.

The spelling of 1188945156 in words is "one billion, one hundred eighty-eight million, nine hundred forty-five thousand, one hundred fifty-six".