18742034 has 4 divisors (see below), whose sum is σ = 28113054. Its totient is φ = 9371016.

The previous prime is 18742021. The next prime is 18742051. The reversal of 18742034 is 43024781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43024781 = 769 ⋅55949.

It can be written as a sum of positive squares in only one way, i.e., 9591409 + 9150625 = 3097^2 + 3025^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18741988 and 18742006.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4685507 + ... + 4685510.

Almost surely, 2^18742034 is an apocalyptic number.

18742034 is a deficient number, since it is larger than the sum of its proper divisors (9371020).

18742034 is an equidigital number, since it uses as much as digits as its factorization.

18742034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9371019.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 18742034 is about 4329.2070867539. The cubic root of 18742034 is about 265.6270141301.

The spelling of 18742034 in words is "eighteen million, seven hundred forty-two thousand, thirty-four".