30228186491 has 4 divisors (see below), whose sum is σ = 30238859352. Its totient is φ = 30217513632.

The previous prime is 30228186449. The next prime is 30228186497. The reversal of 30228186491 is 19468182203.

It is a happy number.

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 30228186491 - 2⁶ = 30228186427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30228186497) 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, 5332181 + ... + 5337846.

It is an arithmetic number, because the mean of its divisors is an integer number (7559714838).

Almost surely, 2^30228186491 is an apocalyptic number.

30228186491 is a deficient number, since it is larger than the sum of its proper divisors (10672861).

30228186491 is a wasteful number, since it uses less digits than its factorization.

30228186491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10672860.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 30228186491 in words is "thirty billion, two hundred twenty-eight million, one hundred eighty-six thousand, four hundred ninety-one".