1145628069 has 4 divisors (see below), whose sum is σ = 1527504096. Its totient is φ = 763752044.

The previous prime is 1145628067. The next prime is 1145628083. The reversal of 1145628069 is 9608265411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1145628069 - 2¹ = 1145628067 is a prime.

It is a super-2 number, since 2×1145628069² = 2624927344961337522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1145628069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145628067) 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 3 ways as a sum of consecutive naturals, for example, 190938009 + ... + 190938014.

It is an arithmetic number, because the mean of its divisors is an integer number (381876024).

Almost surely, 2^1145628069 is an apocalyptic number.

It is an amenable number.

1145628069 is a deficient number, since it is larger than the sum of its proper divisors (381876027).

1145628069 is an equidigital number, since it uses as much as digits as its factorization.

1145628069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381876026.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1145628069 is about 33847.1279283782. The cubic root of 1145628069 is about 1046.3602073272.

The spelling of 1145628069 in words is "one billion, one hundred forty-five million, six hundred twenty-eight thousand, sixty-nine".