30518969 has 16 divisors (see below), whose sum is σ = 34294848. Its totient is φ = 26972352.

The previous prime is 30518951. The next prime is 30518977. The reversal of 30518969 is 96981503.

It is a cyclic number.

It is not a de Polignac number, because 30518969 - 2¹⁶ = 30453433 is a prime.

It is a super-2 number, since 2×30518969² = 1862814937645922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30518909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31754 + ... + 32700.

It is an arithmetic number, because the mean of its divisors is an integer number (2143428).

Almost surely, 2^30518969 is an apocalyptic number.

It is an amenable number.

30518969 is a deficient number, since it is larger than the sum of its proper divisors (3775879).

30518969 is a wasteful number, since it uses less digits than its factorization.

30518969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 30518969 is about 5524.3976142200. The cubic root of 30518969 is about 312.5047474479.

The spelling of 30518969 in words is "thirty million, five hundred eighteen thousand, nine hundred sixty-nine".