111318649 has 16 divisors (see below), whose sum is σ = 124531344. Its totient is φ = 98841600.

The previous prime is 111318637. The next prime is 111318653. The reversal of 111318649 is 946813111.

It can be written as a sum of positive squares in 8 ways, for example, as 18003049 + 93315600 = 4243^2 + 9660^2 .

It is not a de Polignac number, because 111318649 - 2¹³ = 111310457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111318659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37479 + ... + 40339.

It is an arithmetic number, because the mean of its divisors is an integer number (7783209).

Almost surely, 2^111318649 is an apocalyptic number.

It is an amenable number.

111318649 is a deficient number, since it is larger than the sum of its proper divisors (13212695).

111318649 is a wasteful number, since it uses less digits than its factorization.

111318649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988.

The product of its digits is 5184, while the sum is 34.

The square root of 111318649 is about 10550.7653276907. The cubic root of 111318649 is about 481.0489920317.

The spelling of 111318649 in words is "one hundred eleven million, three hundred eighteen thousand, six hundred forty-nine".