18749043 has 8 divisors (see below), whose sum is σ = 27776400. Its totient is φ = 12499344.

The previous prime is 18749009. The next prime is 18749057. The reversal of 18749043 is 34094781.

It is a happy number.

It is not a de Polignac number, because 18749043 - 2⁹ = 18748531 is a prime.

It is a super-2 number, since 2×18749043² = 703053226831698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18748989 and 18749007.

It is not an unprimeable number, because it can be changed into a prime (18749243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347178 + ... + 347231.

It is an arithmetic number, because the mean of its divisors is an integer number (3472050).

Almost surely, 2^18749043 is an apocalyptic number.

18749043 is a deficient number, since it is larger than the sum of its proper divisors (9027357).

18749043 is an equidigital number, since it uses as much as digits as its factorization.

18749043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694418 (or 694412 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 18749043 is about 4330.0165126706. The cubic root of 18749043 is about 265.6601223776.

The spelling of 18749043 in words is "eighteen million, seven hundred forty-nine thousand, forty-three".