34018856891 has 4 divisors (see below), whose sum is σ = 34033075272. Its totient is φ = 34004638512.

The previous prime is 34018856887. The next prime is 34018856917. The reversal of 34018856891 is 19865881043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19865881043 = 34913 ⋅569011.

It is a cyclic number.

It is not a de Polignac number, because 34018856891 - 2² = 34018856887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34018856191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7105601 + ... + 7110386.

It is an arithmetic number, because the mean of its divisors is an integer number (8508268818).

Almost surely, 2^34018856891 is an apocalyptic number.

34018856891 is a deficient number, since it is larger than the sum of its proper divisors (14218381).

34018856891 is a wasteful number, since it uses less digits than its factorization.

34018856891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14218380.

The product of its (nonzero) digits is 1658880, while the sum is 53.

The spelling of 34018856891 in words is "thirty-four billion, eighteen million, eight hundred fifty-six thousand, eight hundred ninety-one".