18083987471 has 8 divisors (see below), whose sum is σ = 20051396688. Its totient is φ = 16170480000.

The previous prime is 18083987437. The next prime is 18083987497. The reversal of 18083987471 is 17478938081.

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 18083987471 - 2¹⁰ = 18083986447 is a prime.

It is a super-3 number, since 3×18083987471³ (a number of 32 digits) contains 333 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 (18083987071) 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, 13474730 + ... + 13476071.

It is an arithmetic number, because the mean of its divisors is an integer number (2506424586).

Almost surely, 2^18083987471 is an apocalyptic number.

18083987471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18083987471 is a deficient number, since it is larger than the sum of its proper divisors (1967409217).

18083987471 is a wasteful number, since it uses less digits than its factorization.

18083987471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26950873.

The product of its (nonzero) digits is 2709504, while the sum is 56.

The spelling of 18083987471 in words is "eighteen billion, eighty-three million, nine hundred eighty-seven thousand, four hundred seventy-one".