18880340579 has 8 divisors (see below), whose sum is σ = 19709675520. Its totient is φ = 18051709896.

The previous prime is 18880340561. The next prime is 18880340581. The reversal of 18880340579 is 97504308881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18880340579 - 2²⁴ = 18863563363 is a prime.

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 18880340579.

It is not an unprimeable number, because it can be changed into a prime (18880343579) 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, 120899 + ... + 228860.

It is an arithmetic number, because the mean of its divisors is an integer number (2463709440).

Almost surely, 2^18880340579 is an apocalyptic number.

18880340579 is a deficient number, since it is larger than the sum of its proper divisors (829334941).

18880340579 is a wasteful number, since it uses less digits than its factorization.

18880340579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352129.

The product of its (nonzero) digits is 1935360, while the sum is 53.

The spelling of 18880340579 in words is "eighteen billion, eight hundred eighty million, three hundred forty thousand, five hundred seventy-nine".