1122543623 has 4 divisors (see below), whose sum is σ = 1122864888. Its totient is φ = 1122222360.

The previous prime is 1122543607. The next prime is 1122543641. The reversal of 1122543623 is 3263452211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1122543623 - 2⁴ = 1122543607 is a prime.

It is a super-2 number, since 2×1122543623² = 2520208371075932258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122543523) 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, 155333 + ... + 162398.

It is an arithmetic number, because the mean of its divisors is an integer number (280716222).

Almost surely, 2^1122543623 is an apocalyptic number.

1122543623 is a deficient number, since it is larger than the sum of its proper divisors (321265).

1122543623 is an equidigital number, since it uses as much as digits as its factorization.

1122543623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321264.

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

The square root of 1122543623 is about 33504.3821462208. The cubic root of 1122543623 is about 1039.2844014031.

Adding to 1122543623 its reverse (3263452211), we get a palindrome (4385995834).

The spelling of 1122543623 in words is "one billion, one hundred twenty-two million, five hundred forty-three thousand, six hundred twenty-three".