18300305749 has 16 divisors (see below), whose sum is σ = 20180068416. Its totient is φ = 16457500800.

The previous prime is 18300305743. The next prime is 18300305759. The reversal of 18300305749 is 94750300381.

It is a cyclic number.

It is not a de Polignac number, because 18300305749 - 2¹⁷ = 18300174677 is a prime.

It is a super-3 number, since 3×18300305749³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18300305743) 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, 368689 + ... + 415369.

It is an arithmetic number, because the mean of its divisors is an integer number (1261254276).

Almost surely, 2^18300305749 is an apocalyptic number.

It is an amenable number.

18300305749 is a deficient number, since it is larger than the sum of its proper divisors (1879762667).

18300305749 is a wasteful number, since it uses less digits than its factorization.

18300305749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47076.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 18300305749 in words is "eighteen billion, three hundred million, three hundred five thousand, seven hundred forty-nine".