18374641 has 4 divisors (see below), whose sum is σ = 18394992. Its totient is φ = 18354292.

The previous prime is 18374639. The next prime is 18374651. The reversal of 18374641 is 14647381.

It is a happy number.

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 18374641 - 2¹ = 18374639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18374597 and 18374606.

It is not an unprimeable number, because it can be changed into a prime (18374651) 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, 8755 + ... + 10648.

It is an arithmetic number, because the mean of its divisors is an integer number (4598748).

Almost surely, 2^18374641 is an apocalyptic number.

It is an amenable number.

18374641 is a deficient number, since it is larger than the sum of its proper divisors (20351).

18374641 is an equidigital number, since it uses as much as digits as its factorization.

18374641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20350.

The product of its digits is 16128, while the sum is 34.

The square root of 18374641 is about 4286.5651750557. The cubic root of 18374641 is about 263.8798858625.

The spelling of 18374641 in words is "eighteen million, three hundred seventy-four thousand, six hundred forty-one".