30849369881 has 4 divisors (see below), whose sum is σ = 33653858064. Its totient is φ = 28044881700.

The previous prime is 30849369871. The next prime is 30849369883. The reversal of 30849369881 is 18896394803.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-30849369881 is a prime.

It is a super-2 number, since 2×30849369881² (a number of 22 digits) contains 22 as substring.

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 30849369881.

It is not an unprimeable number, because it can be changed into a prime (30849369883) 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, 1402244075 + ... + 1402244096.

It is an arithmetic number, because the mean of its divisors is an integer number (8413464516).

Almost surely, 2^30849369881 is an apocalyptic number.

It is an amenable number.

30849369881 is a deficient number, since it is larger than the sum of its proper divisors (2804488183).

30849369881 is a wasteful number, since it uses less digits than its factorization.

30849369881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804488182.

The product of its (nonzero) digits is 8957952, while the sum is 59.

The spelling of 30849369881 in words is "thirty billion, eight hundred forty-nine million, three hundred sixty-nine thousand, eight hundred eighty-one".