1042919819 has 2 divisors, whose sum is σ = 1042919820. Its totient is φ = 1042919818.

The previous prime is 1042919741. The next prime is 1042919863. The reversal of 1042919819 is 9189192401.

It is an a-pointer prime, because the next prime (1042919863) can be obtained adding 1042919819 to its sum of digits (44).

It is a strong prime.

It is an emirp because it is prime and its reverse (9189192401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042919819 - 2²⁸ = 774484363 is a prime.

It is a super-2 number, since 2×1042919819² = 2175363497725985522, 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 1042919819.

It is not a weakly prime, because it can be changed into another prime (1042919879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521459909 + 521459910.

It is an arithmetic number, because the mean of its divisors is an integer number (521459910).

Almost surely, 2^1042919819 is an apocalyptic number.

1042919819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042919819 is an equidigital number, since it uses as much as digits as its factorization.

1042919819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 44.

The square root of 1042919819 is about 32294.2691355603. The cubic root of 1042919819 is about 1014.1066723932.

The spelling of 1042919819 in words is "one billion, forty-two million, nine hundred nineteen thousand, eight hundred nineteen".