111881493 has 20 divisors (see below), whose sum is σ = 167827968. Its totient is φ = 74277000.

The previous prime is 111881477. The next prime is 111881509. The reversal of 111881493 is 394188111.

It is an interprime number because it is at equal distance from previous prime (111881477) and next prime (111881509).

It is not a de Polignac number, because 111881493 - 2⁴ = 111881477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111881423) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17580 + ... + 23082.

Almost surely, 2^111881493 is an apocalyptic number.

It is an amenable number.

111881493 is a deficient number, since it is larger than the sum of its proper divisors (55946475).

111881493 is an equidigital number, since it uses as much as digits as its factorization.

111881493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5766 (or 5757 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 111881493 is about 10577.4048329446. The cubic root of 111881493 is about 481.8583816885.

The spelling of 111881493 in words is "one hundred eleven million, eight hundred eighty-one thousand, four hundred ninety-three".