1229190812 has 18 divisors (see below), whose sum is σ = 2197711152. Its totient is φ = 601283664.

The previous prime is 1229190803. The next prime is 1229190829. The reversal of 1229190812 is 2180919221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 479438 + ... + 481994.

It is an arithmetic number, because the mean of its divisors is an integer number (122095064).

Almost surely, 2^1229190812 is an apocalyptic number.

It is an amenable number.

1229190812 is a deficient number, since it is larger than the sum of its proper divisors (968520340).

1229190812 is an frugal number, since it uses more digits than its factorization.

1229190812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5165 (or 2606 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 1229190812 is about 35059.8176264509. The cubic root of 1229190812 is about 1071.2062594974.

The spelling of 1229190812 in words is "one billion, two hundred twenty-nine million, one hundred ninety thousand, eight hundred twelve".