18346949599 has 8 divisors (see below), whose sum is σ = 20137646592. Its totient is φ = 16576718040.

The previous prime is 18346949597. The next prime is 18346949617. The reversal of 18346949599 is 99594964381.

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

It is a cyclic number.

It is not a de Polignac number, because 18346949599 - 2¹ = 18346949597 is a prime.

It is a super-2 number, since 2×18346949599² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18346949597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5114479 + ... + 5118064.

It is an arithmetic number, because the mean of its divisors is an integer number (2517205824).

Almost surely, 2^18346949599 is an apocalyptic number.

18346949599 is a deficient number, since it is larger than the sum of its proper divisors (1790696993).

18346949599 is a wasteful number, since it uses less digits than its factorization.

18346949599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10232717.

The product of its digits is 75582720, while the sum is 67.

The spelling of 18346949599 in words is "eighteen billion, three hundred forty-six million, nine hundred forty-nine thousand, five hundred ninety-nine".