30809897167 has 4 divisors (see below), whose sum is σ = 35211311056. Its totient is φ = 26408483280.

The previous prime is 30809897161. The next prime is 30809897171. The reversal of 30809897167 is 76179890803.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30809897167 - 2⁷ = 30809897039 is a prime.

It is a super-2 number, since 2×30809897167² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30809897161) 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, 2200706934 + ... + 2200706947.

It is an arithmetic number, because the mean of its divisors is an integer number (8802827764).

Almost surely, 2^30809897167 is an apocalyptic number.

30809897167 is a deficient number, since it is larger than the sum of its proper divisors (4401413889).

30809897167 is an equidigital number, since it uses as much as digits as its factorization.

30809897167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4401413888.

The product of its (nonzero) digits is 4572288, while the sum is 58.

The spelling of 30809897167 in words is "thirty billion, eight hundred nine million, eight hundred ninety-seven thousand, one hundred sixty-seven".