1023189669 has 12 divisors (see below), whose sum is σ = 1478342892. Its totient is φ = 681940800.

The previous prime is 1023189647. The next prime is 1023189677. The reversal of 1023189669 is 9669813201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 422302500 + 600887169 = 20550^2 + 24513^2 .

It is not a de Polignac number, because 1023189669 - 2⁸ = 1023189413 is a prime.

It is a super-2 number, since 2×1023189669² = 2093834197496659122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023189619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25009 + ... + 51689.

It is an arithmetic number, because the mean of its divisors is an integer number (123195241).

Almost surely, 2^1023189669 is an apocalyptic number.

It is an amenable number.

1023189669 is a deficient number, since it is larger than the sum of its proper divisors (455153223).

1023189669 is a wasteful number, since it uses less digits than its factorization.

1023189669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30948 (or 30945 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 1023189669 is about 31987.3360722646. The cubic root of 1023189669 is about 1007.6708965541.

The spelling of 1023189669 in words is "one billion, twenty-three million, one hundred eighty-nine thousand, six hundred sixty-nine".