18691609346 has 8 divisors (see below), whose sum is σ = 28065939264. Its totient is φ = 9336296260.

The previous prime is 18691609319. The next prime is 18691609367. The reversal of 18691609346 is 64390619681.

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

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, 4751750 + ... + 4755681.

It is an arithmetic number, because the mean of its divisors is an integer number (3508242408).

Almost surely, 2^18691609346 is an apocalyptic number.

18691609346 is a deficient number, since it is larger than the sum of its proper divisors (9374329918).

18691609346 is an equidigital number, since it uses as much as digits as its factorization.

18691609346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9508416.

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 18691609346 in words is "eighteen billion, six hundred ninety-one million, six hundred nine thousand, three hundred forty-six".