18141274 has 4 divisors (see below), whose sum is σ = 27211914. Its totient is φ = 9070636.

The previous prime is 18141251. The next prime is 18141283. The reversal of 18141274 is 47214181.

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., 17430625 + 710649 = 4175^2 + 843^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4535317 + ... + 4535320.

Almost surely, 2^18141274 is an apocalyptic number.

18141274 is a deficient number, since it is larger than the sum of its proper divisors (9070640).

18141274 is an equidigital number, since it uses as much as digits as its factorization.

18141274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9070639.

The product of its digits is 1792, while the sum is 28.

The square root of 18141274 is about 4259.2574470205. The cubic root of 18141274 is about 262.7579879357.

The spelling of 18141274 in words is "eighteen million, one hundred forty-one thousand, two hundred seventy-four".