18750720143 has 2 divisors, whose sum is σ = 18750720144. Its totient is φ = 18750720142.

The previous prime is 18750720139. The next prime is 18750720151. The reversal of 18750720143 is 34102705781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18750720143 - 2² = 18750720139 is a prime.

It is a super-2 number, since 2×18750720143² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18750720097 and 18750720106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18750720193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9375360071 + 9375360072.

It is an arithmetic number, because the mean of its divisors is an integer number (9375360072).

Almost surely, 2^18750720143 is an apocalyptic number.

18750720143 is a deficient number, since it is larger than the sum of its proper divisors (1).

18750720143 is an equidigital number, since it uses as much as digits as its factorization.

18750720143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 18750720143 in words is "eighteen billion, seven hundred fifty million, seven hundred twenty thousand, one hundred forty-three".