1623204433 has 4 divisors (see below), whose sum is σ = 1637569188. Its totient is φ = 1608839680.

The previous prime is 1623204397. The next prime is 1623204437. The reversal of 1623204433 is 3344023261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3344023261 = 8713 ⋅383797.

It can be written as a sum of positive squares in 2 ways, for example, as 835672464 + 787531969 = 28908^2 + 28063^2 .

It is a cyclic number.

It is not a de Polignac number, because 1623204433 - 2²¹ = 1621107281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1623204437) 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, 7182208 + ... + 7182433.

It is an arithmetic number, because the mean of its divisors is an integer number (409392297).

Almost surely, 2^1623204433 is an apocalyptic number.

It is an amenable number.

1623204433 is a deficient number, since it is larger than the sum of its proper divisors (14364755).

1623204433 is a wasteful number, since it uses less digits than its factorization.

1623204433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14364754.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 1623204433 is about 40289.0113182242. The cubic root of 1623204433 is about 1175.2341607863.

Adding to 1623204433 its reverse (3344023261), we get a palindrome (4967227694).

It can be divided in two parts, 162320 and 4433, that added together give a triangular number (166753 = T₅₇₇).

The spelling of 1623204433 in words is "one billion, six hundred twenty-three million, two hundred four thousand, four hundred thirty-three".