1145156663 has 16 divisors (see below), whose sum is σ = 1319410176. Its totient is φ = 973594080.

The previous prime is 1145156659. The next prime is 1145156671. The reversal of 1145156663 is 3666515411.

It is a cyclic number.

It is not a de Polignac number, because 1145156663 - 2² = 1145156659 is a prime.

It is a super-2 number, since 2×1145156663² = 2622767565626591138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145156603) 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, 1121093 + ... + 1122113.

It is an arithmetic number, because the mean of its divisors is an integer number (82463136).

Almost surely, 2^1145156663 is an apocalyptic number.

1145156663 is a deficient number, since it is larger than the sum of its proper divisors (174253513).

1145156663 is a wasteful number, since it uses less digits than its factorization.

1145156663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174.

The product of its digits is 64800, while the sum is 38.

The square root of 1145156663 is about 33840.1634600071. The cubic root of 1145156663 is about 1046.2166679695.

The spelling of 1145156663 in words is "one billion, one hundred forty-five million, one hundred fifty-six thousand, six hundred sixty-three".