102491018 has 8 divisors (see below), whose sum is σ = 175698912. Its totient is φ = 43924716.

The previous prime is 102491009. The next prime is 102491027. The reversal of 102491018 is 810194201.

It is an interprime number because it is at equal distance from previous prime (102491009) and next prime (102491027).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3660380 + ... + 3660407.

It is an arithmetic number, because the mean of its divisors is an integer number (21962364).

Almost surely, 2^102491018 is an apocalyptic number.

102491018 is a deficient number, since it is larger than the sum of its proper divisors (73207894).

102491018 is an equidigital number, since it uses as much as digits as its factorization.

102491018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7320796.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 102491018 is about 10123.7847665782. The cubic root of 102491018 is about 467.9814107356.

The spelling of 102491018 in words is "one hundred two million, four hundred ninety-one thousand, eighteen".