181422607 has 2 divisors, whose sum is σ = 181422608. Its totient is φ = 181422606.

The previous prime is 181422599. The next prime is 181422613. The reversal of 181422607 is 706224181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 181422607 - 2³ = 181422599 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181423607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90711303 + 90711304.

It is an arithmetic number, because the mean of its divisors is an integer number (90711304).

Almost surely, 2^181422607 is an apocalyptic number.

181422607 is a deficient number, since it is larger than the sum of its proper divisors (1).

181422607 is an equidigital number, since it uses as much as digits as its factorization.

181422607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 181422607 is about 13469.3209554157. The cubic root of 181422607 is about 566.1051873661.

Adding to 181422607 its reverse (706224181), we get a palindrome (887646788).

The spelling of 181422607 in words is "one hundred eighty-one million, four hundred twenty-two thousand, six hundred seven".