238284182861 has 2 divisors, whose sum is σ = 238284182862. Its totient is φ = 238284182860.

The previous prime is 238284182837. The next prime is 238284182881. The reversal of 238284182861 is 168281482832.

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., 238173280900 + 110901961 = 488030^2 + 10531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238284182861 is a prime.

It is a super-2 number, since 2×238284182861² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238284182881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119142091430 + 119142091431.

It is an arithmetic number, because the mean of its divisors is an integer number (119142091431).

Almost surely, 2^238284182861 is an apocalyptic number.

It is an amenable number.

238284182861 is a deficient number, since it is larger than the sum of its proper divisors (1).

238284182861 is an equidigital number, since it uses as much as digits as its factorization.

238284182861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2359296, while the sum is 53.

The spelling of 238284182861 in words is "two hundred thirty-eight billion, two hundred eighty-four million, one hundred eighty-two thousand, eight hundred sixty-one".