100188887 has 2 divisors, whose sum is σ = 100188888. Its totient is φ = 100188886.

The previous prime is 100188883. The next prime is 100188889. The reversal of 100188887 is 788881001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100188887 - 2² = 100188883 is a prime.

Together with 100188889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100188883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50094443 + 50094444.

It is an arithmetic number, because the mean of its divisors is an integer number (50094444).

Almost surely, 2^100188887 is an apocalyptic number.

100188887 is a deficient number, since it is larger than the sum of its proper divisors (1).

100188887 is an equidigital number, since it uses as much as digits as its factorization.

100188887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28672, while the sum is 41.

The square root of 100188887 is about 10009.4398944197. The cubic root of 100188887 is about 464.4509448130.

The spelling of 100188887 in words is "one hundred million, one hundred eighty-eight thousand, eight hundred eighty-seven".