1623100243 has 2 divisors, whose sum is σ = 1623100244. Its totient is φ = 1623100242.

The previous prime is 1623100223. The next prime is 1623100253. The reversal of 1623100243 is 3420013261.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1623100243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1623100223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811550121 + 811550122.

It is an arithmetic number, because the mean of its divisors is an integer number (811550122).

Almost surely, 2^1623100243 is an apocalyptic number.

1623100243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623100243 is an equidigital number, since it uses as much as digits as its factorization.

1623100243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1623100243 is about 40287.7182649998. The cubic root of 1623100243 is about 1175.2090149976.

The spelling of 1623100243 in words is "one billion, six hundred twenty-three million, one hundred thousand, two hundred forty-three".