1122656749 has 16 divisors (see below), whose sum is σ = 1195173504. Its totient is φ = 1052251200.

The previous prime is 1122656737. The next prime is 1122656803. The reversal of 1122656749 is 9476562211.

It is a cyclic number.

It is not a de Polignac number, because 1122656749 - 2¹³ = 1122648557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122654749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409714 + ... + 412444.

It is an arithmetic number, because the mean of its divisors is an integer number (74698344).

Almost surely, 2^1122656749 is an apocalyptic number.

It is an amenable number.

1122656749 is a deficient number, since it is larger than the sum of its proper divisors (72516755).

1122656749 is a wasteful number, since it uses less digits than its factorization.

1122656749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108.

The product of its digits is 181440, while the sum is 43.

The square root of 1122656749 is about 33506.0703306132. The cubic root of 1122656749 is about 1039.3193120398.

The spelling of 1122656749 in words is "one billion, one hundred twenty-two million, six hundred fifty-six thousand, seven hundred forty-nine".