30181349980891 has 2 divisors, whose sum is σ = 30181349980892. Its totient is φ = 30181349980890.

The previous prime is 30181349980841. The next prime is 30181349980949. The reversal of 30181349980891 is 19808994318103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30181349980891 - 2⁴³ = 21385256958683 is a prime.

It is not a weakly prime, because it can be changed into another prime (30181349980841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15090674990445 + 15090674990446.

It is an arithmetic number, because the mean of its divisors is an integer number (15090674990446).

Almost surely, 2^{30181349980891} is an apocalyptic number.

30181349980891 is a deficient number, since it is larger than the sum of its proper divisors (1).

30181349980891 is an equidigital number, since it uses as much as digits as its factorization.

30181349980891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13436928, while the sum is 64.

The spelling of 30181349980891 in words is "thirty trillion, one hundred eighty-one billion, three hundred forty-nine million, nine hundred eighty thousand, eight hundred ninety-one".