1229998319 has 16 divisors (see below), whose sum is σ = 1403813376. Its totient is φ = 1067678400.

The previous prime is 1229998313. The next prime is 1229998339. The reversal of 1229998319 is 9138999221.

It is a cyclic number.

It is not a de Polignac number, because 1229998319 - 2⁴ = 1229998303 is a prime.

It is a super-2 number, since 2×1229998319² = 3025791729485651522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229998313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7817 + ... + 50210.

It is an arithmetic number, because the mean of its divisors is an integer number (87738336).

Almost surely, 2^1229998319 is an apocalyptic number.

1229998319 is a deficient number, since it is larger than the sum of its proper divisors (173815057).

1229998319 is a wasteful number, since it uses less digits than its factorization.

1229998319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58126.

The product of its digits is 629856, while the sum is 53.

The square root of 1229998319 is about 35071.3318680657. The cubic root of 1229998319 is about 1071.4407815895.

The spelling of 1229998319 in words is "one billion, two hundred twenty-nine million, nine hundred ninety-eight thousand, three hundred nineteen".