18670742 has 8 divisors (see below), whose sum is σ = 28909632. Its totient is φ = 9034200.

The previous prime is 18670741. The next prime is 18670747. The reversal of 18670742 is 24707681.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18670741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150509 + ... + 150632.

It is an arithmetic number, because the mean of its divisors is an integer number (3613704).

Almost surely, 2^18670742 is an apocalyptic number.

18670742 is a deficient number, since it is larger than the sum of its proper divisors (10238890).

18670742 is a wasteful number, since it uses less digits than its factorization.

18670742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301174.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 18670742 is about 4320.9654013889. The cubic root of 18670742 is about 265.2897838651.

The spelling of 18670742 in words is "eighteen million, six hundred seventy thousand, seven hundred forty-two".