1232345578 has 4 divisors (see below), whose sum is σ = 1848518370. Its totient is φ = 616172788.

The previous prime is 1232345533. The next prime is 1232345617. The reversal of 1232345578 is 8755432321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8755432321 = 461 ⋅18992261.

It can be written as a sum of positive squares in only one way, i.e., 773229249 + 459116329 = 27807^2 + 21427^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1232345578.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308086393 + ... + 308086396.

Almost surely, 2^1232345578 is an apocalyptic number.

1232345578 is a deficient number, since it is larger than the sum of its proper divisors (616172792).

1232345578 is an equidigital number, since it uses as much as digits as its factorization.

1232345578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616172791.

The product of its digits is 201600, while the sum is 40.

The square root of 1232345578 is about 35104.7799879162. The cubic root of 1232345578 is about 1072.1219074299.

Adding to 1232345578 its reverse (8755432321), we get a palindrome (9987777899).

The spelling of 1232345578 in words is "one billion, two hundred thirty-two million, three hundred forty-five thousand, five hundred seventy-eight".