1942189543 has 6 divisors (see below), whose sum is σ = 2219778456. Its totient is φ = 1664633952.

The previous prime is 1942189541. The next prime is 1942189547. The reversal of 1942189543 is 3459812491.

It is not a de Polignac number, because 1942189543 - 2¹ = 1942189541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1942189493 and 1942189502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1942189541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108271 + ... + 124927.

It is an arithmetic number, because the mean of its divisors is an integer number (369963076).

Almost surely, 2^1942189543 is an apocalyptic number.

1942189543 is a deficient number, since it is larger than the sum of its proper divisors (277588913).

1942189543 is an frugal number, since it uses more digits than its factorization.

1942189543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33321 (or 16664 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 1942189543 is about 44070.2795884029. The cubic root of 1942189543 is about 1247.6627349843.

The spelling of 1942189543 in words is "one billion, nine hundred forty-two million, one hundred eighty-nine thousand, five hundred forty-three".