103693439891 has 2 divisors, whose sum is σ = 103693439892. Its totient is φ = 103693439890.

The previous prime is 103693439833. The next prime is 103693440041. The reversal of 103693439891 is 198934396301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103693439891 - 2¹⁴ = 103693423507 is a prime.

It is not a weakly prime, because it can be changed into another prime (103693439191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51846719945 + 51846719946.

It is an arithmetic number, because the mean of its divisors is an integer number (51846719946).

Almost surely, 2^103693439891 is an apocalyptic number.

103693439891 is a deficient number, since it is larger than the sum of its proper divisors (1).

103693439891 is an equidigital number, since it uses as much as digits as its factorization.

103693439891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3779136, while the sum is 56.

The spelling of 103693439891 in words is "one hundred three billion, six hundred ninety-three million, four hundred thirty-nine thousand, eight hundred ninety-one".