30840549937 has 4 divisors (see below), whose sum is σ = 31187073060. Its totient is φ = 30494026816.

The previous prime is 30840549899. The next prime is 30840549947. The reversal of 30840549937 is 73994504803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73994504803 = 1399 ⋅52890997.

It can be written as a sum of positive squares in 2 ways, for example, as 2695790241 + 28144759696 = 51921^2 + 167764^2 .

It is a cyclic number.

It is not a de Polignac number, because 30840549937 - 2⁷ = 30840549809 is a prime.

It is a super-2 number, since 2×30840549937² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30840549947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173261428 + ... + 173261605.

It is an arithmetic number, because the mean of its divisors is an integer number (7796768265).

Almost surely, 2^30840549937 is an apocalyptic number.

It is an amenable number.

30840549937 is a deficient number, since it is larger than the sum of its proper divisors (346523123).

30840549937 is an equidigital number, since it uses as much as digits as its factorization.

30840549937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346523122.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 30840549937 in words is "thirty billion, eight hundred forty million, five hundred forty-nine thousand, nine hundred thirty-seven".