18254071 has 16 divisors (see below), whose sum is σ = 20736000. Its totient is φ = 15919200.

The previous prime is 18254057. The next prime is 18254077. The reversal of 18254071 is 17045281.

It is not a de Polignac number, because 18254071 - 2⁷ = 18253943 is a prime.

It is a super-2 number, since 2×18254071² = 666422216146082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18254077) 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 15 ways as a sum of consecutive naturals, for example, 67725 + ... + 67993.

It is an arithmetic number, because the mean of its divisors is an integer number (1296000).

Almost surely, 2^18254071 is an apocalyptic number.

18254071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18254071 is a deficient number, since it is larger than the sum of its proper divisors (2481929).

18254071 is a wasteful number, since it uses less digits than its factorization.

18254071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 18254071 is about 4272.4783206004. The cubic root of 18254071 is about 263.3014465832.

The spelling of 18254071 in words is "eighteen million, two hundred fifty-four thousand, seventy-one".