30189018361 has 8 divisors (see below), whose sum is σ = 30928005864. Its totient is φ = 29450158080.

The previous prime is 30189018323. The next prime is 30189018383. The reversal of 30189018361 is 16381098103.

It can be written as a sum of positive squares in 4 ways, for example, as 468982336 + 29720036025 = 21656^2 + 172395^2 .

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 30189018361 - 2¹³ = 30189010169 is a prime.

It is a super-2 number, since 2×30189018361² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30189018061) 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, 600385 + ... + 648721.

It is an arithmetic number, because the mean of its divisors is an integer number (3866000733).

Almost surely, 2^30189018361 is an apocalyptic number.

It is an amenable number.

30189018361 is a deficient number, since it is larger than the sum of its proper divisors (738987503).

30189018361 is a wasteful number, since it uses less digits than its factorization.

30189018361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63611.

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 30189018361 in words is "thirty billion, one hundred eighty-nine million, eighteen thousand, three hundred sixty-one".