1919031299 has 2 divisors, whose sum is σ = 1919031300. Its totient is φ = 1919031298.

The previous prime is 1919031271. The next prime is 1919031397. The reversal of 1919031299 is 9921309191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1919031299 - 2¹² = 1919027203 is a prime.

It is a super-2 number, since 2×1919031299² = 7365362253083254802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1919031799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959515649 + 959515650.

It is an arithmetic number, because the mean of its divisors is an integer number (959515650).

Almost surely, 2^1919031299 is an apocalyptic number.

1919031299 is a deficient number, since it is larger than the sum of its proper divisors (1).

1919031299 is an equidigital number, since it uses as much as digits as its factorization.

1919031299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39366, while the sum is 44.

The square root of 1919031299 is about 43806.7494685465. The cubic root of 1919031299 is about 1242.6839408824.

The spelling of 1919031299 in words is "one billion, nine hundred nineteen million, thirty-one thousand, two hundred ninety-nine".