18354554 has 4 divisors (see below), whose sum is σ = 27531834. Its totient is φ = 9177276.

The previous prime is 18354521. The next prime is 18354563. The reversal of 18354554 is 45545381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45545381 = 7 ⋅6506483.

It can be written as a sum of positive squares in only one way, i.e., 15880225 + 2474329 = 3985^2 + 1573^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4588637 + ... + 4588640.

Almost surely, 2^18354554 is an apocalyptic number.

18354554 is a deficient number, since it is larger than the sum of its proper divisors (9177280).

18354554 is an equidigital number, since it uses as much as digits as its factorization.

18354554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9177279.

The product of its digits is 48000, while the sum is 35.

The square root of 18354554 is about 4284.2215162151. The cubic root of 18354554 is about 263.7836937256.

The spelling of 18354554 in words is "eighteen million, three hundred fifty-four thousand, five hundred fifty-four".