1019798029 has 4 divisors (see below), whose sum is σ = 1021118076. Its totient is φ = 1018477984.

The previous prime is 1019797991. The next prime is 1019798047. The reversal of 1019798029 is 9208979101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 606489129 + 413308900 = 24627^2 + 20330^2 .

It is a cyclic number.

It is not a de Polignac number, because 1019798029 - 2⁷ = 1019797901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1019798029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1019798929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658864 + ... + 660409.

It is an arithmetic number, because the mean of its divisors is an integer number (255279519).

Almost surely, 2^1019798029 is an apocalyptic number.

It is an amenable number.

1019798029 is a deficient number, since it is larger than the sum of its proper divisors (1320047).

1019798029 is an equidigital number, since it uses as much as digits as its factorization.

1019798029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320046.

The product of its (nonzero) digits is 81648, while the sum is 46.

The square root of 1019798029 is about 31934.2767101433. The cubic root of 1019798029 is about 1006.5562644569.

The spelling of 1019798029 in words is "one billion, nineteen million, seven hundred ninety-eight thousand, twenty-nine".