1226997774 has 32 divisors (see below), whose sum is σ = 2800359840. Its totient is φ = 397944576.

The previous prime is 1226997769. The next prime is 1226997781. The reversal of 1226997774 is 4777996221.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1226997774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305059 + ... + 309054.

It is an arithmetic number, because the mean of its divisors is an integer number (87511245).

Almost surely, 2^1226997774 is an apocalyptic number.

1226997774 is an abundant number, since it is smaller than the sum of its proper divisors (1573362066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1226997774 is a wasteful number, since it uses less digits than its factorization.

1226997774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614161 (or 614155 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 1226997774 is about 35028.5280021870. The cubic root of 1226997774 is about 1070.5688226602.

The spelling of 1226997774 in words is "one billion, two hundred twenty-six million, nine hundred ninety-seven thousand, seven hundred seventy-four".