30157281385819 has 16 divisors (see below), whose sum is σ = 35046556779520. Its totient is φ = 25415994464640.

The previous prime is 30157281385813. The next prime is 30157281385823. The reversal of 30157281385819 is 91858318275103.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 30157281385819 - 2⁵ = 30157281385787 is a prime.

It is a super-2 number, since 2×30157281385819² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30157281385813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113007729 + ... + 113274274.

It is an arithmetic number, because the mean of its divisors is an integer number (2190409798720).

Almost surely, 2^{30157281385819} is an apocalyptic number.

30157281385819 is a deficient number, since it is larger than the sum of its proper divisors (4889275393701).

30157281385819 is a wasteful number, since it uses less digits than its factorization.

30157281385819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226282330.

The product of its (nonzero) digits is 14515200, while the sum is 61.

The spelling of 30157281385819 in words is "thirty trillion, one hundred fifty-seven billion, two hundred eighty-one million, three hundred eighty-five thousand, eight hundred nineteen".