1145154644 has 6 divisors (see below), whose sum is σ = 2004020634. Its totient is φ = 572577320.

The previous prime is 1145154631. The next prime is 1145154653. The reversal of 1145154644 is 4464515411.

It can be written as a sum of positive squares in only one way, i.e., 1145010244 + 144400 = 33838^2 + 380^2 .

It is a super-2 number, since 2×1145154644² = 2622758317349533472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143144327 + ... + 143144334.

It is an arithmetic number, because the mean of its divisors is an integer number (334003439).

Almost surely, 2^1145154644 is an apocalyptic number.

It is an amenable number.

1145154644 is a deficient number, since it is larger than the sum of its proper divisors (858865990).

1145154644 is a wasteful number, since it uses less digits than its factorization.

1145154644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286288665 (or 286288663 counting only the distinct ones).

The product of its digits is 38400, while the sum is 35.

The square root of 1145154644 is about 33840.1336285778. The cubic root of 1145154644 is about 1046.2160531154.

The spelling of 1145154644 in words is "one billion, one hundred forty-five million, one hundred fifty-four thousand, six hundred forty-four".