111298149 has 24 divisors (see below), whose sum is σ = 166584600. Its totient is φ = 71554560.

The previous prime is 111298141. The next prime is 111298151. The reversal of 111298149 is 941892111.

It can be written as a sum of positive squares in 4 ways, for example, as 6890625 + 104407524 = 2625^2 + 10218^2 .

It is not a de Polignac number, because 111298149 - 2³ = 111298141 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111298141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31147 + ... + 34535.

It is an arithmetic number, because the mean of its divisors is an integer number (6941025).

Almost surely, 2^111298149 is an apocalyptic number.

It is an amenable number.

111298149 is a deficient number, since it is larger than the sum of its proper divisors (55286451).

111298149 is a wasteful number, since it uses less digits than its factorization.

111298149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525 (or 3522 counting only the distinct ones).

The product of its digits is 5184, while the sum is 36.

The square root of 111298149 is about 10549.7937894539. The cubic root of 111298149 is about 481.0194608620.

The spelling of 111298149 in words is "one hundred eleven million, two hundred ninety-eight thousand, one hundred forty-nine".