1146661556 has 6 divisors (see below), whose sum is σ = 2006657730. Its totient is φ = 573330776.

The previous prime is 1146661553. The next prime is 1146661567. The reversal of 1146661556 is 6551666411.

It can be written as a sum of positive squares in only one way, i.e., 1145822500 + 839056 = 33850^2 + 916^2 .

It is a super-2 number, since 2×1146661556² = 2629665448016682272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1146661553) by changing a digit.

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 as a sum of consecutive naturals, namely, 143332691 + ... + 143332698.

It is an arithmetic number, because the mean of its divisors is an integer number (334442955).

Almost surely, 2^1146661556 is an apocalyptic number.

It is an amenable number.

1146661556 is a deficient number, since it is larger than the sum of its proper divisors (859996174).

1146661556 is a wasteful number, since it uses less digits than its factorization.

1146661556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286665393 (or 286665391 counting only the distinct ones).

The product of its digits is 129600, while the sum is 41.

The square root of 1146661556 is about 33862.3914690029. The cubic root of 1146661556 is about 1046.6747581201.

The spelling of 1146661556 in words is "one billion, one hundred forty-six million, six hundred sixty-one thousand, five hundred fifty-six".