2238630161 has 2 divisors, whose sum is σ = 2238630162. Its totient is φ = 2238630160.

The previous prime is 2238630133. The next prime is 2238630211. The reversal of 2238630161 is 1610368322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2218881025 + 19749136 = 47105^2 + 4444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2238630161 is a prime.

It is a super-2 number, since 2×2238630161² = 10022929995477771842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2238630131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119315080 + 1119315081.

It is an arithmetic number, because the mean of its divisors is an integer number (1119315081).

Almost surely, 2^2238630161 is an apocalyptic number.

It is an amenable number.

2238630161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238630161 is an equidigital number, since it uses as much as digits as its factorization.

2238630161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2238630161 is about 47314.1644859127. The cubic root of 2238630161 is about 1308.1597533665.

Adding to 2238630161 its reverse (1610368322), we get a palindrome (3848998483).

The spelling of 2238630161 in words is "two billion, two hundred thirty-eight million, six hundred thirty thousand, one hundred sixty-one".