1149861888 has 192 divisors, whose sum is σ = 3803127120. Its totient is φ = 327942144.

The previous prime is 1149861863. The next prime is 1149861901. The reversal of 1149861888 is 8881689411.

It is a happy number.

1149861888 is a `hidden beast` number, since 1 + 14 + 9 + 8 + 618 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×1149861888² = 2644364722949849088, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2064106 + ... + 2064662.

Almost surely, 2^1149861888 is an apocalyptic number.

1149861888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1149861888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1901563560).

1149861888 is an abundant number, since it is smaller than the sum of its proper divisors (2653265232).

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

1149861888 is an frugal number, since it uses more digits than its factorization.

1149861888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 569 counting only the distinct ones).

The product of its digits is 884736, while the sum is 54.

The square root of 1149861888 is about 33909.6135041377. The cubic root of 1149861888 is about 1047.6476098984.

The spelling of 1149861888 in words is "one billion, one hundred forty-nine million, eight hundred sixty-one thousand, eight hundred eighty-eight".