18145080 has 128 divisors (see below), whose sum is σ = 61819200. Its totient is φ = 4732416.

The previous prime is 18145073. The next prime is 18145087. The reversal of 18145080 is 8054181.

It is an interprime number because it is at equal distance from previous prime (18145073) and next prime (18145087).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18145087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57082 + ... + 57398.

Almost surely, 2^18145080 is an apocalyptic number.

18145080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18145080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30909600).

18145080 is an abundant number, since it is smaller than the sum of its proper divisors (43674120).

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

18145080 is a wasteful number, since it uses less digits than its factorization.

18145080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 18145080 is about 4259.7042150835. The cubic root of 18145080 is about 262.7763620031.

The spelling of 18145080 in words is "eighteen million, one hundred forty-five thousand, eighty".