1188920164 has 24 divisors (see below), whose sum is σ = 2092862520. Its totient is φ = 590970624.

The previous prime is 1188920147. The next prime is 1188920179. The reversal of 1188920164 is 4610298811.

It can be written as a sum of positive squares in 4 ways, for example, as 795691264 + 393228900 = 28208^2 + 19830^2 .

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, 595552 + ... + 597544.

It is an arithmetic number, because the mean of its divisors is an integer number (87202605).

Almost surely, 2^1188920164 is an apocalyptic number.

It is an amenable number.

1188920164 is a deficient number, since it is larger than the sum of its proper divisors (903942356).

1188920164 is a wasteful number, since it uses less digits than its factorization.

1188920164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799 (or 2797 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 1188920164 is about 34480.7216281794. The cubic root of 1188920164 is about 1059.3778727442.

The spelling of 1188920164 in words is "one billion, one hundred eighty-eight million, nine hundred twenty thousand, one hundred sixty-four".