1149882981 has 8 divisors (see below), whose sum is σ = 1651114080. Its totient is φ = 707620272.

The previous prime is 1149882977. The next prime is 1149882989. The reversal of 1149882981 is 1892889411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1149882981 - 2² = 1149882977 is a prime.

It is a super-2 number, since 2×1149882981² = 2644461739986892722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149882989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14742051 + ... + 14742128.

It is an arithmetic number, because the mean of its divisors is an integer number (206389260).

Almost surely, 2^1149882981 is an apocalyptic number.

It is an amenable number.

1149882981 is a deficient number, since it is larger than the sum of its proper divisors (501231099).

1149882981 is a wasteful number, since it uses less digits than its factorization.

1149882981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29484195.

The product of its digits is 331776, while the sum is 51.

The square root of 1149882981 is about 33909.9245207063. The cubic root of 1149882981 is about 1047.6540158550.

The spelling of 1149882981 in words is "one billion, one hundred forty-nine million, eight hundred eighty-two thousand, nine hundred eighty-one".