202430923789 has 2 divisors, whose sum is σ = 202430923790. Its totient is φ = 202430923788.

The previous prime is 202430923697. The next prime is 202430923801. The reversal of 202430923789 is 987329034202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202425306889 + 5616900 = 449917^2 + 2370^2 .

It is a cyclic number.

It is not a de Polignac number, because 202430923789 - 2¹³ = 202430915597 is a prime.

It is a super-2 number, since 2×202430923789² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202430920789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101215461894 + 101215461895.

It is an arithmetic number, because the mean of its divisors is an integer number (101215461895).

Almost surely, 2^202430923789 is an apocalyptic number.

It is an amenable number.

202430923789 is a deficient number, since it is larger than the sum of its proper divisors (1).

202430923789 is an equidigital number, since it uses as much as digits as its factorization.

202430923789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 202430923789 in words is "two hundred two billion, four hundred thirty million, nine hundred twenty-three thousand, seven hundred eighty-nine".