1919949529 has 2 divisors, whose sum is σ = 1919949530. Its totient is φ = 1919949528.

The previous prime is 1919949469. The next prime is 1919949533. The reversal of 1919949529 is 9259499191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1732807129 + 187142400 = 41627^2 + 13680^2 .

It is a cyclic number.

It is not a de Polignac number, because 1919949529 - 2¹⁷ = 1919818457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1919947529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959974764 + 959974765.

It is an arithmetic number, because the mean of its divisors is an integer number (959974765).

Almost surely, 2^1919949529 is an apocalyptic number.

It is an amenable number.

1919949529 is a deficient number, since it is larger than the sum of its proper divisors (1).

1919949529 is an equidigital number, since it uses as much as digits as its factorization.

1919949529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2361960, while the sum is 58.

The square root of 1919949529 is about 43817.2286777701. The cubic root of 1919949529 is about 1242.8821116520.

The spelling of 1919949529 in words is "one billion, nine hundred nineteen million, nine hundred forty-nine thousand, five hundred twenty-nine".