1928742143 has 2 divisors, whose sum is σ = 1928742144. Its totient is φ = 1928742142.

The previous prime is 1928742139. The next prime is 1928742161. The reversal of 1928742143 is 3412478291.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1928742143 - 2² = 1928742139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1928742143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1928742113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 964371071 + 964371072.

It is an arithmetic number, because the mean of its divisors is an integer number (964371072).

Almost surely, 2^1928742143 is an apocalyptic number.

1928742143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1928742143 is an equidigital number, since it uses as much as digits as its factorization.

1928742143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The square root of 1928742143 is about 43917.4469089450. The cubic root of 1928742143 is about 1244.7765265041.

The spelling of 1928742143 in words is "one billion, nine hundred twenty-eight million, seven hundred forty-two thousand, one hundred forty-three".