18339154 has 4 divisors (see below), whose sum is σ = 27508734. Its totient is φ = 9169576.

The previous prime is 18339127. The next prime is 18339157. The reversal of 18339154 is 45193381.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16443025 + 1896129 = 4055^2 + 1377^2 .

It is not an unprimeable number, because it can be changed into a prime (18339157) 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 as a sum of consecutive naturals, namely, 4584787 + ... + 4584790.

Almost surely, 2^18339154 is an apocalyptic number.

18339154 is a deficient number, since it is larger than the sum of its proper divisors (9169580).

18339154 is an equidigital number, since it uses as much as digits as its factorization.

18339154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9169579.

The product of its digits is 12960, while the sum is 34.

The square root of 18339154 is about 4282.4238463749. The cubic root of 18339154 is about 263.7098990417.

The spelling of 18339154 in words is "eighteen million, three hundred thirty-nine thousand, one hundred fifty-four".