30499533989 has 4 divisors (see below), whose sum is σ = 32104772640. Its totient is φ = 28894295340.

The previous prime is 30499533959. The next prime is 30499534033. The reversal of 30499533989 is 98933599403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98933599403 = 1637 ⋅60435919.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30499533989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30499533919) 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, 802619297 + ... + 802619334.

It is an arithmetic number, because the mean of its divisors is an integer number (8026193160).

Almost surely, 2^30499533989 is an apocalyptic number.

It is an amenable number.

30499533989 is a deficient number, since it is larger than the sum of its proper divisors (1605238651).

30499533989 is a wasteful number, since it uses less digits than its factorization.

30499533989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605238650.

The product of its (nonzero) digits is 28343520, while the sum is 62.

The spelling of 30499533989 in words is "thirty billion, four hundred ninety-nine million, five hundred thirty-three thousand, nine hundred eighty-nine".