18102345 has 24 divisors (see below), whose sum is σ = 30577536. Its totient is φ = 9143712.

The previous prime is 18102341. The next prime is 18102347. The reversal of 18102345 is 54320181.

It is not a de Polignac number, because 18102345 - 2² = 18102341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18102341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3744 + ... + 7086.

It is an arithmetic number, because the mean of its divisors is an integer number (1274064).

Almost surely, 2^18102345 is an apocalyptic number.

18102345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18102345 is a deficient number, since it is larger than the sum of its proper divisors (12475191).

18102345 is a wasteful number, since it uses less digits than its factorization.

18102345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3389 (or 3370 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 18102345 is about 4254.6850647257. The cubic root of 18102345 is about 262.5699042852.

The spelling of 18102345 in words is "eighteen million, one hundred two thousand, three hundred forty-five".