1229980801 has 18 divisors (see below), whose sum is σ = 1447507590. Its totient is φ = 1042094592.

The previous prime is 1229980793. The next prime is 1229980811. The reversal of 1229980801 is 1080899221.

It can be written as a sum of positive squares in 3 ways, for example, as 68807025 + 1161173776 = 8295^2 + 34076^2 .

It is not a de Polignac number, because 1229980801 - 2³ = 1229980793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1229980811) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 386545 + ... + 389713.

Almost surely, 2^1229980801 is an apocalyptic number.

It is an amenable number.

1229980801 is a deficient number, since it is larger than the sum of its proper divisors (217526789).

1229980801 is an frugal number, since it uses more digits than its factorization.

1229980801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361 (or 3265 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 1229980801 is about 35071.0821190336. The cubic root of 1229980801 is about 1071.4356949732.

The spelling of 1229980801 in words is "one billion, two hundred twenty-nine million, nine hundred eighty thousand, eight hundred one".