111640379 has 2 divisors, whose sum is σ = 111640380. Its totient is φ = 111640378.

The previous prime is 111640363. The next prime is 111640423. The reversal of 111640379 is 973046111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111640379 - 2⁴ = 111640363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111640079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55820189 + 55820190.

It is an arithmetic number, because the mean of its divisors is an integer number (55820190).

Almost surely, 2^111640379 is an apocalyptic number.

111640379 is a deficient number, since it is larger than the sum of its proper divisors (1).

111640379 is an equidigital number, since it uses as much as digits as its factorization.

111640379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 111640379 is about 10566.0010883967. The cubic root of 111640379 is about 481.5119843234.

The spelling of 111640379 in words is "one hundred eleven million, six hundred forty thousand, three hundred seventy-nine".