18986130 has 64 divisors (see below), whose sum is σ = 53308800. Its totient is φ = 4795200.

The previous prime is 18986129. The next prime is 18986131. The reversal of 18986130 is 3168981.

It is an interprime number because it is at equal distance from previous prime (18986129) and next prime (18986131).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18986131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3280 + ... + 6980.

It is an arithmetic number, because the mean of its divisors is an integer number (832950).

Almost surely, 2^18986130 is an apocalyptic number.

18986130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18986130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26654400).

18986130 is an abundant number, since it is smaller than the sum of its proper divisors (34322670).

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

18986130 is a wasteful number, since it uses less digits than its factorization.

18986130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3736 (or 3730 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 18986130 is about 4357.3076549631. The cubic root of 18986130 is about 266.7752179591.

The spelling of 18986130 in words is "eighteen million, nine hundred eighty-six thousand, one hundred thirty".