1226581283 has 4 divisors (see below), whose sum is σ = 1279910928. Its totient is φ = 1173251640.

The previous prime is 1226581277. The next prime is 1226581333. The reversal of 1226581283 is 3821856221.

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

It is a cyclic number.

It is not a de Polignac number, because 1226581283 - 2⁶ = 1226581219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226581253) 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, 26664788 + ... + 26664833.

It is an arithmetic number, because the mean of its divisors is an integer number (319977732).

Almost surely, 2^1226581283 is an apocalyptic number.

1226581283 is a deficient number, since it is larger than the sum of its proper divisors (53329645).

1226581283 is an equidigital number, since it uses as much as digits as its factorization.

1226581283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53329644.

The product of its digits is 46080, while the sum is 38.

The square root of 1226581283 is about 35022.5824718852. The cubic root of 1226581283 is about 1070.4476779853.

The spelling of 1226581283 in words is "one billion, two hundred twenty-six million, five hundred eighty-one thousand, two hundred eighty-three".