1226819013 has 16 divisors (see below), whose sum is σ = 1870794240. Its totient is φ = 700531056.

The previous prime is 1226818997. The next prime is 1226819021. The reversal of 1226819013 is 3109186221.

It is not a de Polignac number, because 1226819013 - 2⁴ = 1226818997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226819053) 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, 9498 + ... + 50436.

It is an arithmetic number, because the mean of its divisors is an integer number (116924640).

Almost surely, 2^1226819013 is an apocalyptic number.

It is an amenable number.

1226819013 is a deficient number, since it is larger than the sum of its proper divisors (643975227).

1226819013 is a wasteful number, since it uses less digits than its factorization.

1226819013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42376.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1226819013 is about 35025.9762604842. The cubic root of 1226819013 is about 1070.5168298335.

The spelling of 1226819013 in words is "one billion, two hundred twenty-six million, eight hundred nineteen thousand, thirteen".