13981858997 has 8 divisors (see below), whose sum is σ = 14365824000. Its totient is φ = 13598213904.

The previous prime is 13981858993. The next prime is 13981859009. The reversal of 13981858997 is 79985818931.

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 13981858997 - 2² = 13981858993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13981858993) 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, 10004 + ... + 167522.

It is an arithmetic number, because the mean of its divisors is an integer number (1795728000).

Almost surely, 2^13981858997 is an apocalyptic number.

It is an amenable number.

13981858997 is a deficient number, since it is larger than the sum of its proper divisors (383965003).

13981858997 is a wasteful number, since it uses less digits than its factorization.

13981858997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159955.

The product of its digits is 39191040, while the sum is 68.

The spelling of 13981858997 in words is "thirteen billion, nine hundred eighty-one million, eight hundred fifty-eight thousand, nine hundred ninety-seven".