229902498181 has 2 divisors, whose sum is σ = 229902498182. Its totient is φ = 229902498180.

The previous prime is 229902498169. The next prime is 229902498223. The reversal of 229902498181 is 181894209922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168127881156 + 61774617025 = 410034^2 + 248545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229902498181 is a prime.

It is a super-2 number, since 2×229902498181² (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 (229902498131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114951249090 + 114951249091.

It is an arithmetic number, because the mean of its divisors is an integer number (114951249091).

Almost surely, 2^229902498181 is an apocalyptic number.

It is an amenable number.

229902498181 is a deficient number, since it is larger than the sum of its proper divisors (1).

229902498181 is an equidigital number, since it uses as much as digits as its factorization.

229902498181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 55.

The spelling of 229902498181 in words is "two hundred twenty-nine billion, nine hundred two million, four hundred ninety-eight thousand, one hundred eighty-one".