30183906949 has 6 divisors (see below), whose sum is σ = 35111891814. Its totient is φ = 25871920200.

The previous prime is 30183906911. The next prime is 30183906971. The reversal of 30183906949 is 94960938103.

It can be written as a sum of positive squares in only one way, i.e., 28812686049 + 1371220900 = 169743^2 + 37030^2 .

It is not a de Polignac number, because 30183906949 - 2⁹ = 30183906437 is a prime.

It is a super-2 number, since 2×30183906949² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30183906896 and 30183906905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30183906979) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307999002 + ... + 307999099.

It is an arithmetic number, because the mean of its divisors is an integer number (5851981969).

Almost surely, 2^30183906949 is an apocalyptic number.

It is an amenable number.

30183906949 is a deficient number, since it is larger than the sum of its proper divisors (4927984865).

30183906949 is an equidigital number, since it uses as much as digits as its factorization.

30183906949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615998115 (or 615998108 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 52.

The spelling of 30183906949 in words is "thirty billion, one hundred eighty-three million, nine hundred six thousand, nine hundred forty-nine".