18300971519 has 16 divisors (see below), whose sum is σ = 19018540800. Its totient is φ = 17598018240.

The previous prime is 18300971483. The next prime is 18300971587. The reversal of 18300971519 is 91517900381.

It is a cyclic number.

It is not a de Polignac number, because 18300971519 - 2¹² = 18300967423 is a prime.

It is a super-2 number, since 2×18300971519² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18300971519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18300971119) 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 15 ways as a sum of consecutive naturals, for example, 862532 + ... + 883494.

It is an arithmetic number, because the mean of its divisors is an integer number (1188658800).

Almost surely, 2^18300971519 is an apocalyptic number.

18300971519 is a deficient number, since it is larger than the sum of its proper divisors (717569281).

18300971519 is a wasteful number, since it uses less digits than its factorization.

18300971519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21310.

The product of its (nonzero) digits is 68040, while the sum is 44.

The spelling of 18300971519 in words is "eighteen billion, three hundred million, nine hundred seventy-one thousand, five hundred nineteen".