30385021969 has 9 divisors (see below), whose sum is σ = 31402386729. Its totient is φ = 29399630580.

The previous prime is 30385021943. The next prime is 30385021973. The reversal of 30385021969 is 96912058303.

It is a happy number.

The square root of 30385021969 is 174313.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 30385021969 - 2⁷ = 30385021841 is a prime.

It is a super-2 number, since 2×30385021969² (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 (30385021169) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5400892 + ... + 5406514.

It is an arithmetic number, because the mean of its divisors is an integer number (3489154081).

Almost surely, 2^30385021969 is an apocalyptic number.

30385021969 is the 174313-rd square number.

30385021969 is the 87157-th centered octagonal number.

It is an amenable number.

30385021969 is a deficient number, since it is larger than the sum of its proper divisors (1017364760).

30385021969 is an frugal number, since it uses more digits than its factorization.

30385021969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11308 (or 5654 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 30385021969 in words is "thirty billion, three hundred eighty-five million, twenty-one thousand, nine hundred sixty-nine".