18996041481 has 16 divisors (see below), whose sum is σ = 26927945856. Its totient is φ = 11884860416.

The previous prime is 18996041473. The next prime is 18996041489. The reversal of 18996041481 is 18414069981.

It is an interprime number because it is at equal distance from previous prime (18996041473) and next prime (18996041489).

It is a cyclic number.

It is not a de Polignac number, because 18996041481 - 2³ = 18996041473 is a prime.

It is a super-2 number, since 2×18996041481² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18996041489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2593560 + ... + 2600873.

It is an arithmetic number, because the mean of its divisors is an integer number (1682996616).

Almost surely, 2^18996041481 is an apocalyptic number.

It is an amenable number.

18996041481 is a deficient number, since it is larger than the sum of its proper divisors (7931904375).

18996041481 is a wasteful number, since it uses less digits than its factorization.

18996041481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194512.

The product of its (nonzero) digits is 497664, while the sum is 51.

The spelling of 18996041481 in words is "eighteen billion, nine hundred ninety-six million, forty-one thousand, four hundred eighty-one".