18003080391049 has 8 divisors (see below), whose sum is σ = 19390755351240. Its totient is φ = 16615808662656.

The previous prime is 18003080391013. The next prime is 18003080391061. The reversal of 18003080391049 is 94019308030081.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 467128507024 + 17535951884025 = 683468^2 + 4187595^2 .

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 18003080391049 - 2¹³ = 18003080382857 is a prime.

It is a super-2 number, since 2×18003080391049² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18003080391349) 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, 100715212 + ... + 100893805.

It is an arithmetic number, because the mean of its divisors is an integer number (2423844418905).

Almost surely, 2^{18003080391049} is an apocalyptic number.

It is an amenable number.

18003080391049 is a deficient number, since it is larger than the sum of its proper divisors (1387674960191).

18003080391049 is a wasteful number, since it uses less digits than its factorization.

18003080391049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201615899.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 18003080391049 in words is "eighteen trillion, three billion, eighty million, three hundred ninety-one thousand, forty-nine".