18374002 has 4 divisors (see below), whose sum is σ = 27561006. Its totient is φ = 9187000.

The previous prime is 18373981. The next prime is 18374011. The reversal of 18374002 is 20047381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20047381 = 29 ⋅691289.

It can be written as a sum of positive squares in only one way, i.e., 17547721 + 826281 = 4189^2 + 909^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4593499 + ... + 4593502.

Almost surely, 2^18374002 is an apocalyptic number.

18374002 is a deficient number, since it is larger than the sum of its proper divisors (9187004).

18374002 is an equidigital number, since it uses as much as digits as its factorization.

18374002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9187003.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 18374002 is about 4286.4906392059. The cubic root of 18374002 is about 263.8768269148.

The spelling of 18374002 in words is "eighteen million, three hundred seventy-four thousand, two".