1145348649 has 27 divisors (see below), whose sum is σ = 1717823653. Its totient is φ = 735340704.

The previous prime is 1145348639. The next prime is 1145348669. The reversal of 1145348649 is 9468435411.

The square root of 1145348649 is 33843.

It is a perfect power (a square), and thus also a powerful number.

1145348649 is a `hidden beast` number, since 114 + 53 + 486 + 4 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 72131049 + 1073217600 = 8493^2 + 32760^2 .

It is not a de Polignac number, because 1145348649 - 2⁷ = 1145348521 is a prime.

It is a super-2 number, since 2×1145348649² = 2623647055532250402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145348609) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2944147 + ... + 2944535.

Almost surely, 2^1145348649 is an apocalyptic number.

1145348649 is the 33843-rd square number.

1145348649 is the 16922-nd centered octagonal number.

It is an amenable number.

1145348649 is a deficient number, since it is larger than the sum of its proper divisors (572475004).

1145348649 is an frugal number, since it uses more digits than its factorization.

1145348649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 421 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The cubic root of 1145348649 is about 1046.2751309252.

The spelling of 1145348649 in words is "one billion, one hundred forty-five million, three hundred forty-eight thousand, six hundred forty-nine".