30537213709 has 4 divisors (see below), whose sum is σ = 30833691616. Its totient is φ = 30240735804.

The previous prime is 30537213691. The next prime is 30537213727. The reversal of 30537213709 is 90731273503.

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 an emirpimes, since its reverse is a distinct semiprime: 90731273503 = 13 ⋅6979328731.

It is an interprime number because it is at equal distance from previous prime (30537213691) and next prime (30537213727).

It is a cyclic number.

It is not a de Polignac number, because 30537213709 - 2¹⁷ = 30537082637 is a prime.

It is a super-2 number, since 2×30537213709² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30537213739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148238799 + ... + 148239004.

It is an arithmetic number, because the mean of its divisors is an integer number (7708422904).

Almost surely, 2^30537213709 is an apocalyptic number.

It is an amenable number.

30537213709 is a deficient number, since it is larger than the sum of its proper divisors (296477907).

30537213709 is a wasteful number, since it uses less digits than its factorization.

30537213709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296477906.

The product of its (nonzero) digits is 119070, while the sum is 40.

The spelling of 30537213709 in words is "thirty billion, five hundred thirty-seven million, two hundred thirteen thousand, seven hundred nine".