1156226644 has 12 divisors (see below), whose sum is σ = 2142420084. Its totient is φ = 544106624.

The previous prime is 1156226639. The next prime is 1156226663. The reversal of 1156226644 is 4466226511.

It can be written as a sum of positive squares in 2 ways, for example, as 559890244 + 596336400 = 23662^2 + 24420^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8501599 + ... + 8501734.

It is an arithmetic number, because the mean of its divisors is an integer number (178535007).

Almost surely, 2^1156226644 is an apocalyptic number.

It is an amenable number.

1156226644 is a deficient number, since it is larger than the sum of its proper divisors (986193440).

1156226644 is a wasteful number, since it uses less digits than its factorization.

1156226644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17003354 (or 17003352 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 1156226644 is about 34003.3328366500. The cubic root of 1156226644 is about 1049.5770462805.

The spelling of 1156226644 in words is "one billion, one hundred fifty-six million, two hundred twenty-six thousand, six hundred forty-four".