18860442263 has 8 divisors (see below), whose sum is σ = 20321025648. Its totient is φ = 17401256064.

The previous prime is 18860442259. The next prime is 18860442281. The reversal of 18860442263 is 36224406881.

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 18860442263 - 2² = 18860442259 is a prime.

It is a super-2 number, since 2×18860442263² (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 (18860462263) 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, 321170 + ... + 375327.

It is an arithmetic number, because the mean of its divisors is an integer number (2540128206).

Almost surely, 2^18860442263 is an apocalyptic number.

18860442263 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18860442263 is a deficient number, since it is larger than the sum of its proper divisors (1460583385).

18860442263 is a wasteful number, since it uses less digits than its factorization.

18860442263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698593.

The product of its (nonzero) digits is 442368, while the sum is 44.

The spelling of 18860442263 in words is "eighteen billion, eight hundred sixty million, four hundred forty-two thousand, two hundred sixty-three".