1923690143 has 2 divisors, whose sum is σ = 1923690144. Its totient is φ = 1923690142.

The previous prime is 1923690133. The next prime is 1923690149. The reversal of 1923690143 is 3410963291.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1923690143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1923690097 and 1923690106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1923690149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961845071 + 961845072.

It is an arithmetic number, because the mean of its divisors is an integer number (961845072).

Almost surely, 2^1923690143 is an apocalyptic number.

1923690143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1923690143 is an equidigital number, since it uses as much as digits as its factorization.

1923690143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 1923690143 is about 43859.8921909300. The cubic root of 1923690143 is about 1243.6887519884.

The spelling of 1923690143 in words is "one billion, nine hundred twenty-three million, six hundred ninety thousand, one hundred forty-three".