18301023 has 12 divisors (see below), whose sum is σ = 28468440. Its totient is φ = 11262096.

The previous prime is 18301021. The next prime is 18301057. The reversal of 18301023 is 32010381.

It is not a de Polignac number, because 18301023 - 2¹ = 18301021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18300987 and 18301005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18301021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78093 + ... + 78326.

It is an arithmetic number, because the mean of its divisors is an integer number (2372370).

Almost surely, 2^18301023 is an apocalyptic number.

18301023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18301023 is a deficient number, since it is larger than the sum of its proper divisors (10167417).

18301023 is a wasteful number, since it uses less digits than its factorization.

18301023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156438 (or 156435 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 18301023 is about 4277.9694949824. The cubic root of 18301023 is about 263.5270025749.

The spelling of 18301023 in words is "eighteen million, three hundred one thousand, twenty-three".