18159048 has 24 divisors (see below), whose sum is σ = 49180950. Its totient is φ = 6052992.

The previous prime is 18159007. The next prime is 18159049. The reversal of 18159048 is 84095181.

It can be written as a sum of positive squares in only one way, i.e., 10771524 + 7387524 = 3282^2 + 2718^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (18159049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126033 + ... + 126176.

Almost surely, 2^18159048 is an apocalyptic number.

18159048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18159048 is an abundant number, since it is smaller than the sum of its proper divisors (31021902).

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

18159048 is a wasteful number, since it uses less digits than its factorization.

18159048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252221 (or 252214 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 18159048 is about 4261.3434501340. The cubic root of 18159048 is about 262.8437727244.

It can be divided in two parts, 18 and 159048, that multiplied together give a square (2862864 = 1692²).

The spelling of 18159048 in words is "eighteen million, one hundred fifty-nine thousand, forty-eight".