88188091 has 2 divisors, whose sum is σ = 88188092. Its totient is φ = 88188090.

The previous prime is 88188059. The next prime is 88188119. The reversal of 88188091 is 19088188.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 88188091 - 2⁵ = 88188059 is a prime.

It is not a weakly prime, because it can be changed into another prime (88188491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44094045 + 44094046.

It is an arithmetic number, because the mean of its divisors is an integer number (44094046).

Almost surely, 2^88188091 is an apocalyptic number.

88188091 is a deficient number, since it is larger than the sum of its proper divisors (1).

88188091 is an equidigital number, since it uses as much as digits as its factorization.

88188091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 43.

The square root of 88188091 is about 9390.8514523445. The cubic root of 88188091 is about 445.1126945991.

The spelling of 88188091 in words is "eighty-eight million, one hundred eighty-eight thousand, ninety-one".