1023166556 has 12 divisors (see below), whose sum is σ = 1895867568. Its totient is φ = 481490112.

The previous prime is 1023166489. The next prime is 1023166559. The reversal of 1023166556 is 6556613201.

It is a super-2 number, since 2×1023166556² = 2093739602633802272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023166559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7523216 + ... + 7523351.

It is an arithmetic number, because the mean of its divisors is an integer number (157988964).

Almost surely, 2^1023166556 is an apocalyptic number.

It is an amenable number.

1023166556 is a deficient number, since it is larger than the sum of its proper divisors (872701012).

1023166556 is a wasteful number, since it uses less digits than its factorization.

1023166556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15046588 (or 15046586 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 1023166556 is about 31986.9747866221. The cubic root of 1023166556 is about 1007.6633090157.

Adding to 1023166556 its reverse (6556613201), we get a palindrome (7579779757).

The spelling of 1023166556 in words is "one billion, twenty-three million, one hundred sixty-six thousand, five hundred fifty-six".