18956942 has 8 divisors (see below), whose sum is σ = 28456896. Its totient is φ = 9471312.

The previous prime is 18956897. The next prime is 18956963. The reversal of 18956942 is 24965981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18956893 and 18956902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803 + ... + 6209.

It is an arithmetic number, because the mean of its divisors is an integer number (3557112).

Almost surely, 2^18956942 is an apocalyptic number.

18956942 is a deficient number, since it is larger than the sum of its proper divisors (9499954).

18956942 is a wasteful number, since it uses less digits than its factorization.

18956942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7162.

The product of its digits is 155520, while the sum is 44.

The square root of 18956942 is about 4353.9570507758. The cubic root of 18956942 is about 266.6384404152.

The spelling of 18956942 in words is "eighteen million, nine hundred fifty-six thousand, nine hundred forty-two".