13981048889 has 2 divisors, whose sum is σ = 13981048890. Its totient is φ = 13981048888.

The previous prime is 13981048883. The next prime is 13981048909. The reversal of 13981048889 is 98884018931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7968597289 + 6012451600 = 89267^2 + 77540^2 .

It is a cyclic number.

It is not a de Polignac number, because 13981048889 - 2¹² = 13981044793 is a prime.

It is not a weakly prime, because it can be changed into another prime (13981048883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6990524444 + 6990524445.

It is an arithmetic number, because the mean of its divisors is an integer number (6990524445).

Almost surely, 2^13981048889 is an apocalyptic number.

It is an amenable number.

13981048889 is a deficient number, since it is larger than the sum of its proper divisors (1).

13981048889 is an equidigital number, since it uses as much as digits as its factorization.

13981048889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3981312, while the sum is 59.

The spelling of 13981048889 in words is "thirteen billion, nine hundred eighty-one million, forty-eight thousand, eight hundred eighty-nine".