18161530296 has 512 divisors, whose sum is σ = 61312204800. Its totient is φ = 4352071680.

The previous prime is 18161530243. The next prime is 18161530301. The reversal of 18161530296 is 69203516181.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 166619490 + ... + 166619598.

It is an arithmetic number, because the mean of its divisors is an integer number (119750400).

Almost surely, 2^18161530296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18161530296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30656102400).

18161530296 is an abundant number, since it is smaller than the sum of its proper divisors (43150674504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18161530296 is a wasteful number, since it uses less digits than its factorization.

18161530296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 18161530296 in words is "eighteen billion, one hundred sixty-one million, five hundred thirty thousand, two hundred ninety-six".