30818145 has 8 divisors (see below), whose sum is σ = 49309056. Its totient is φ = 16436336.

The previous prime is 30818141. The next prime is 30818159. The reversal of 30818145 is 54181803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30818145 - 2² = 30818141 is a prime.

It is a super-2 number, since 2×30818145² = 1899516122482050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30818141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1027257 + ... + 1027286.

It is an arithmetic number, because the mean of its divisors is an integer number (6163632).

Almost surely, 2^30818145 is an apocalyptic number.

It is an amenable number.

30818145 is a deficient number, since it is larger than the sum of its proper divisors (18490911).

30818145 is a wasteful number, since it uses less digits than its factorization.

30818145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054551.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 30818145 is about 5551.4092805341. The cubic root of 30818145 is about 313.5225851065.

Adding to 30818145 its reverse (54181803), we get a palindrome (84999948).

The spelling of 30818145 in words is "thirty million, eight hundred eighteen thousand, one hundred forty-five".