18100049743 has 4 divisors (see below), whose sum is σ = 19052683960. Its totient is φ = 17147415528.

The previous prime is 18100049741. The next prime is 18100049777. The reversal of 18100049743 is 34794000181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18100049743 - 2¹ = 18100049741 is a prime.

It is a super-2 number, since 2×18100049743² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18100049741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476317080 + ... + 476317117.

It is an arithmetic number, because the mean of its divisors is an integer number (4763170990).

Almost surely, 2^18100049743 is an apocalyptic number.

18100049743 is a deficient number, since it is larger than the sum of its proper divisors (952634217).

18100049743 is an equidigital number, since it uses as much as digits as its factorization.

18100049743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952634216.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 18100049743 in words is "eighteen billion, one hundred million, forty-nine thousand, seven hundred forty-three".