1023565090 has 16 divisors (see below), whose sum is σ = 1922522688. Its totient is φ = 391624816.

The previous prime is 1023565079. The next prime is 1023565133. The reversal of 1023565090 is 905653201.

It is an unprimeable number.

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, 2224912 + ... + 2225371.

It is an arithmetic number, because the mean of its divisors is an integer number (120157668).

Almost surely, 2^1023565090 is an apocalyptic number.

1023565090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1023565090 is a deficient number, since it is larger than the sum of its proper divisors (898957598).

1023565090 is a wasteful number, since it uses less digits than its factorization.

1023565090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4450313.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 1023565090 is about 31993.2038095593. The cubic root of 1023565090 is about 1007.7941238073.

The spelling of 1023565090 in words is "one billion, twenty-three million, five hundred sixty-five thousand, ninety".