111902945 has 16 divisors (see below), whose sum is σ = 167419008. Its totient is φ = 69757440.

The previous prime is 111902927. The next prime is 111902953. The reversal of 111902945 is 549209111.

It is not a de Polignac number, because 111902945 - 2¹⁴ = 111886561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144944 + ... + 145713.

It is an arithmetic number, because the mean of its divisors is an integer number (10463688).

Almost surely, 2^111902945 is an apocalyptic number.

It is an amenable number.

111902945 is a deficient number, since it is larger than the sum of its proper divisors (55516063).

111902945 is a wasteful number, since it uses less digits than its factorization.

111902945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290680.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 111902945 is about 10578.4188326990. The cubic root of 111902945 is about 481.8891766697.

The spelling of 111902945 in words is "one hundred eleven million, nine hundred two thousand, nine hundred forty-five".