18254401 has 4 divisors (see below), whose sum is σ = 19913904. Its totient is φ = 16594900.

The previous prime is 18254347. The next prime is 18254407. The reversal of 18254401 is 10445281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18254401 - 2¹³ = 18246209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18254407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829735 + ... + 829756.

It is an arithmetic number, because the mean of its divisors is an integer number (4978476).

Almost surely, 2^18254401 is an apocalyptic number.

18254401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18254401 is a deficient number, since it is larger than the sum of its proper divisors (1659503).

18254401 is a wasteful number, since it uses less digits than its factorization.

18254401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659502.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 18254401 is about 4272.5169396973. The cubic root of 18254401 is about 263.3030332421.

Adding to 18254401 its reverse (10445281), we get a palindrome (28699682).

It can be divided in two parts, 1825 and 4401, that added together give a palindrome (6226).

The spelling of 18254401 in words is "eighteen million, two hundred fifty-four thousand, four hundred one".