30944218549 has 4 divisors (see below), whose sum is σ = 30944612736. Its totient is φ = 30943824364.

The previous prime is 30944218541. The next prime is 30944218553. The reversal of 30944218549 is 94581244903.

It is a happy number.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 30944218549 - 2³ = 30944218541 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30944218541) 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, 34789 + ... + 251194.

It is an arithmetic number, because the mean of its divisors is an integer number (7736153184).

Almost surely, 2^30944218549 is an apocalyptic number.

It is an amenable number.

30944218549 is a deficient number, since it is larger than the sum of its proper divisors (394187).

30944218549 is a wasteful number, since it uses less digits than its factorization.

30944218549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394186.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 30944218549 in words is "thirty billion, nine hundred forty-four million, two hundred eighteen thousand, five hundred forty-nine".