1226154589 has 12 divisors (see below), whose sum is σ = 1379105728. Its totient is φ = 1088758440.

The previous prime is 1226154583. The next prime is 1226154637. The reversal of 1226154589 is 9854516221.

It is not a de Polignac number, because 1226154589 - 2¹¹ = 1226152541 is a prime.

It is a super-2 number, since 2×1226154589² = 3006910152251517842, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226154583) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112629 + ... + 123034.

Almost surely, 2^1226154589 is an apocalyptic number.

It is an amenable number.

1226154589 is a deficient number, since it is larger than the sum of its proper divisors (152951139).

1226154589 is a wasteful number, since it uses less digits than its factorization.

1226154589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235728 (or 235717 counting only the distinct ones).

The product of its digits is 172800, while the sum is 43.

The square root of 1226154589 is about 35016.4902438837. The cubic root of 1226154589 is about 1070.3235371227.

The spelling of 1226154589 in words is "one billion, two hundred twenty-six million, one hundred fifty-four thousand, five hundred eighty-nine".