1149680988 has 72 divisors (see below), whose sum is σ = 3034231200. Its totient is φ = 366581376.

The previous prime is 1149680933. The next prime is 1149680993. The reversal of 1149680988 is 8890869411.

It is a super-2 number, since 2×1149680988² = 2643532748337312288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108745 + ... + 118847.

It is an arithmetic number, because the mean of its divisors is an integer number (42142100).

Almost surely, 2^1149680988 is an apocalyptic number.

1149680988 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 1149680988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1517115600).

1149680988 is an abundant number, since it is smaller than the sum of its proper divisors (1884550212).

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

1149680988 is a wasteful number, since it uses less digits than its factorization.

1149680988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10251 (or 10246 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 54.

The square root of 1149680988 is about 33906.9460140544. The cubic root of 1149680988 is about 1047.5926672443.

The spelling of 1149680988 in words is "one billion, one hundred forty-nine million, six hundred eighty thousand, nine hundred eighty-eight".