1226061644 has 24 divisors (see below), whose sum is σ = 2240544768. Its totient is φ = 585945360.

The previous prime is 1226061587. The next prime is 1226061677. The reversal of 1226061644 is 4461606221.

It is a super-3 number, since 3×1226061644³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1226061644.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145589 + ... + 153779.

It is an arithmetic number, because the mean of its divisors is an integer number (93356032).

Almost surely, 2^1226061644 is an apocalyptic number.

It is an amenable number.

1226061644 is a deficient number, since it is larger than the sum of its proper divisors (1014483124).

1226061644 is a wasteful number, since it uses less digits than its factorization.

1226061644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9845 (or 9843 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1226061644 is about 35015.1630583095. The cubic root of 1226061644 is about 1070.2964922091.

Adding to 1226061644 its reverse (4461606221), we get a palindrome (5687667865).

The spelling of 1226061644 in words is "one billion, two hundred twenty-six million, sixty-one thousand, six hundred forty-four".