1023443156 has 12 divisors (see below), whose sum is σ = 1804099668. Its totient is φ = 507986112.

The previous prime is 1023443009. The next prime is 1023443209. The reversal of 1023443156 is 6513443201.

It can be written as a sum of positive squares in 2 ways, for example, as 306810256 + 716632900 = 17516^2 + 26770^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933251 + ... + 934346.

It is an arithmetic number, because the mean of its divisors is an integer number (150341639).

Almost surely, 2^1023443156 is an apocalyptic number.

It is an amenable number.

1023443156 is a deficient number, since it is larger than the sum of its proper divisors (780656512).

1023443156 is a wasteful number, since it uses less digits than its factorization.

1023443156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867738 (or 1867736 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1023443156 is about 31991.2981293351. The cubic root of 1023443156 is about 1007.7541037995.

Adding to 1023443156 its reverse (6513443201), we get a palindrome (7536886357).

The spelling of 1023443156 in words is "one billion, twenty-three million, four hundred forty-three thousand, one hundred fifty-six".