18380350651 has 8 divisors (see below), whose sum is σ = 19799241840. Its totient is φ = 16962176352.

The previous prime is 18380350633. The next prime is 18380350673. The reversal of 18380350651 is 15605308381.

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 18380350651 - 2⁵ = 18380350619 is a prime.

It is a super-3 number, since 3×18380350651³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18380350691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125365 + ... + 229078.

It is an arithmetic number, because the mean of its divisors is an integer number (2474905230).

Almost surely, 2^18380350651 is an apocalyptic number.

18380350651 is a deficient number, since it is larger than the sum of its proper divisors (1418891189).

18380350651 is a wasteful number, since it uses less digits than its factorization.

18380350651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358445.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 18380350651 in words is "eighteen billion, three hundred eighty million, three hundred fifty thousand, six hundred fifty-one".