30308136894 has 108 divisors (see below), whose sum is σ = 81147342744. Its totient is φ = 8150018688.

The previous prime is 30308136853. The next prime is 30308136931. The reversal of 30308136894 is 49863180303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 195447 + ... + 314349.

Almost surely, 2^30308136894 is an apocalyptic number.

30308136894 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30308136894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40573671372).

30308136894 is an abundant number, since it is smaller than the sum of its proper divisors (50839205850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30308136894 is a wasteful number, since it uses less digits than its factorization.

30308136894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118959 (or 118932 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 30308136894 in words is "thirty billion, three hundred eight million, one hundred thirty-six thousand, eight hundred ninety-four".