18323773834 has 8 divisors (see below), whose sum is σ = 27486983520. Its totient is φ = 9161445996.

The previous prime is 18323773807. The next prime is 18323773841. The reversal of 18323773834 is 43837732381.

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, 165804 + ... + 253255.

It is an arithmetic number, because the mean of its divisors is an integer number (3435872940).

Almost surely, 2^18323773834 is an apocalyptic number.

18323773834 is a deficient number, since it is larger than the sum of its proper divisors (9163209686).

18323773834 is a wasteful number, since it uses less digits than its factorization.

18323773834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440924.

The product of its digits is 2032128, while the sum is 49.

The spelling of 18323773834 in words is "eighteen billion, three hundred twenty-three million, seven hundred seventy-three thousand, eight hundred thirty-four".