1145164443 has 8 divisors (see below), whose sum is σ = 1542627408. Its totient is φ = 755572224.

The previous prime is 1145164373. The next prime is 1145164463. The reversal of 1145164443 is 3444615411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1145164443 - 2⁸ = 1145164187 is a prime.

It is a super-2 number, since 2×1145164443² = 2622803203023000498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1145164463) 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 7 ways as a sum of consecutive naturals, for example, 1967346 + ... + 1967927.

It is an arithmetic number, because the mean of its divisors is an integer number (192828426).

Almost surely, 2^1145164443 is an apocalyptic number.

1145164443 is a deficient number, since it is larger than the sum of its proper divisors (397462965).

1145164443 is an equidigital number, since it uses as much as digits as its factorization.

1145164443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3935373.

The product of its digits is 23040, while the sum is 33.

The square root of 1145164443 is about 33840.2784119753. The cubic root of 1145164443 is about 1046.2190372370.

Adding to 1145164443 its reverse (3444615411), we get a palindrome (4589779854).

The spelling of 1145164443 in words is "one billion, one hundred forty-five million, one hundred sixty-four thousand, four hundred forty-three".