18070942 has 4 divisors (see below), whose sum is σ = 27106416. Its totient is φ = 9035470.

The previous prime is 18070891. The next prime is 18070963. The reversal of 18070942 is 24907081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24907081 = 19 ⋅1310899.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 4517734 + ... + 4517737.

It is an arithmetic number, because the mean of its divisors is an integer number (6776604).

Almost surely, 2^18070942 is an apocalyptic number.

18070942 is a deficient number, since it is larger than the sum of its proper divisors (9035474).

18070942 is an equidigital number, since it uses as much as digits as its factorization.

18070942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9035473.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 18070942 is about 4250.9930604507. The cubic root of 18070942 is about 262.4179855651.

The spelling of 18070942 in words is "eighteen million, seventy thousand, nine hundred forty-two".