111820739 has 2 divisors, whose sum is σ = 111820740. Its totient is φ = 111820738.

The previous prime is 111820729. The next prime is 111820783. The reversal of 111820739 is 937028111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111820739 is a prime.

It is a super-2 number, since 2×111820739² = 25007755341012242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111820729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55910369 + 55910370.

It is an arithmetic number, because the mean of its divisors is an integer number (55910370).

Almost surely, 2^111820739 is an apocalyptic number.

111820739 is a deficient number, since it is larger than the sum of its proper divisors (1).

111820739 is an equidigital number, since it uses as much as digits as its factorization.

111820739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 111820739 is about 10574.5325665015. The cubic root of 111820739 is about 481.7711461566.

The spelling of 111820739 in words is "one hundred eleven million, eight hundred twenty thousand, seven hundred thirty-nine".