1969463143 has 2 divisors, whose sum is σ = 1969463144. Its totient is φ = 1969463142.

The previous prime is 1969463063. The next prime is 1969463149. The reversal of 1969463143 is 3413649691.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1969463143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1969463093 and 1969463102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1969463149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984731571 + 984731572.

It is an arithmetic number, because the mean of its divisors is an integer number (984731572).

Almost surely, 2^1969463143 is an apocalyptic number.

1969463143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969463143 is an equidigital number, since it uses as much as digits as its factorization.

1969463143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 46.

The square root of 1969463143 is about 44378.6338568460. The cubic root of 1969463143 is about 1253.4757966187.

The spelling of 1969463143 in words is "one billion, nine hundred sixty-nine million, four hundred sixty-three thousand, one hundred forty-three".