18825283877 has 2 divisors, whose sum is σ = 18825283878. Its totient is φ = 18825283876.

The previous prime is 18825283859. The next prime is 18825283879. The reversal of 18825283877 is 77838252881.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15695328961 + 3129954916 = 125281^2 + 55946^2 .

It is a cyclic number.

It is not a de Polignac number, because 18825283877 - 2¹⁶ = 18825218341 is a prime.

It is a super-2 number, since 2×18825283877² (a number of 21 digits) contains 22 as substring.

Together with 18825283879, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18825283879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9412641938 + 9412641939.

It is an arithmetic number, because the mean of its divisors is an integer number (9412641939).

Almost surely, 2^18825283877 is an apocalyptic number.

It is an amenable number.

18825283877 is a deficient number, since it is larger than the sum of its proper divisors (1).

18825283877 is an equidigital number, since it uses as much as digits as its factorization.

18825283877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12042240, while the sum is 59.

The spelling of 18825283877 in words is "eighteen billion, eight hundred twenty-five million, two hundred eighty-three thousand, eight hundred seventy-seven".