1969775141 has 2 divisors, whose sum is σ = 1969775142. Its totient is φ = 1969775140.

The previous prime is 1969775113. The next prime is 1969775167. The reversal of 1969775141 is 1415779691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1222900900 + 746874241 = 34970^2 + 27329^2 .

It is a cyclic number.

It is not a de Polignac number, because 1969775141 - 2¹⁴ = 1969758757 is a prime.

It is a super-2 number, since 2×1969775141² = 7760028212203139762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1969775141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1969775111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984887570 + 984887571.

It is an arithmetic number, because the mean of its divisors is an integer number (984887571).

Almost surely, 2^1969775141 is an apocalyptic number.

It is an amenable number.

1969775141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969775141 is an equidigital number, since it uses as much as digits as its factorization.

1969775141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 50.

The square root of 1969775141 is about 44382.1489002054. The cubic root of 1969775141 is about 1253.5419840792.

The spelling of 1969775141 in words is "one billion, nine hundred sixty-nine million, seven hundred seventy-five thousand, one hundred forty-one".