18102030 has 16 divisors (see below), whose sum is σ = 43444944. Its totient is φ = 4827200.

The previous prime is 18102023. The next prime is 18102037. The reversal of 18102030 is 3020181.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18102023) and next prime (18102037).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18102037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301671 + ... + 301730.

It is an arithmetic number, because the mean of its divisors is an integer number (2715309).

Almost surely, 2^18102030 is an apocalyptic number.

18102030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18102030 is an abundant number, since it is smaller than the sum of its proper divisors (25342914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18102030 is a wasteful number, since it uses less digits than its factorization.

18102030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603411.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 18102030 is about 4254.6480465486. The cubic root of 18102030 is about 262.5683812781.

The spelling of 18102030 in words is "eighteen million, one hundred two thousand, thirty".