18570742 has 4 divisors (see below), whose sum is σ = 27856116. Its totient is φ = 9285370.

The previous prime is 18570709. The next prime is 18570757. The reversal of 18570742 is 24707581.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 18570698 and 18570707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4642684 + ... + 4642687.

It is an arithmetic number, because the mean of its divisors is an integer number (6964029).

Almost surely, 2^18570742 is an apocalyptic number.

18570742 is a deficient number, since it is larger than the sum of its proper divisors (9285374).

18570742 is an equidigital number, since it uses as much as digits as its factorization.

18570742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9285373.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 18570742 is about 4309.3783774461. The cubic root of 18570742 is about 264.8153074061.

The spelling of 18570742 in words is "eighteen million, five hundred seventy thousand, seven hundred forty-two".