1145124661 has 16 divisors (see below), whose sum is σ = 1215000000. Its totient is φ = 1076253696.

The previous prime is 1145124613. The next prime is 1145124677. The reversal of 1145124661 is 1664215411.

It is a cyclic number.

It is not a de Polignac number, because 1145124661 - 2²³ = 1136736053 is a prime.

It is a super-2 number, since 2×1145124661² = 2622620978460729842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145184661) 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 in 15 ways as a sum of consecutive naturals, for example, 2294590 + ... + 2295088.

It is an arithmetic number, because the mean of its divisors is an integer number (75937500).

Almost surely, 2^1145124661 is an apocalyptic number.

It is an amenable number.

1145124661 is a deficient number, since it is larger than the sum of its proper divisors (69875339).

1145124661 is a wasteful number, since it uses less digits than its factorization.

1145124661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236.

The product of its digits is 5760, while the sum is 31.

The square root of 1145124661 is about 33839.6906161980. The cubic root of 1145124661 is about 1046.2069221886.

The spelling of 1145124661 in words is "one billion, one hundred forty-five million, one hundred twenty-four thousand, six hundred sixty-one".