30192945091 has 4 divisors (see below), whose sum is σ = 31008970672. Its totient is φ = 29376919512.

The previous prime is 30192945071. The next prime is 30192945103. The reversal of 30192945091 is 19054929103.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30192945091 is a prime.

It is a super-2 number, since 2×30192945091² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30192945001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408012735 + ... + 408012808.

It is an arithmetic number, because the mean of its divisors is an integer number (7752242668).

Almost surely, 2^30192945091 is an apocalyptic number.

30192945091 is a deficient number, since it is larger than the sum of its proper divisors (816025581).

30192945091 is an equidigital number, since it uses as much as digits as its factorization.

30192945091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816025580.

The product of its (nonzero) digits is 87480, while the sum is 43.

The spelling of 30192945091 in words is "thirty billion, one hundred ninety-two million, nine hundred forty-five thousand, ninety-one".