1188045552 has 40 divisors (see below), whose sum is σ = 3174953040. Its totient is φ = 382359040.

The previous prime is 1188045517. The next prime is 1188045553. The reversal of 1188045552 is 2555408811.

It is a super-2 number, since 2×1188045552² = 2822904467253969408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1188045552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188045553) 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, 425349 + ... + 428132.

It is an arithmetic number, because the mean of its divisors is an integer number (79373826).

Almost surely, 2^1188045552 is an apocalyptic number.

1188045552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1188045552 is an abundant number, since it is smaller than the sum of its proper divisors (1986907488).

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

1188045552 is a wasteful number, since it uses less digits than its factorization.

1188045552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853521 (or 853515 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 39.

The square root of 1188045552 is about 34468.0366716760. The cubic root of 1188045552 is about 1059.1180369928.

The spelling of 1188045552 in words is "one billion, one hundred eighty-eight million, forty-five thousand, five hundred fifty-two".