181950163 has 2 divisors, whose sum is σ = 181950164. Its totient is φ = 181950162.

The previous prime is 181950149. The next prime is 181950211. The reversal of 181950163 is 361059181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 181950163 - 2¹³ = 181941971 is a prime.

It is not a weakly prime, because it can be changed into another prime (181950143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90975081 + 90975082.

It is an arithmetic number, because the mean of its divisors is an integer number (90975082).

Almost surely, 2^181950163 is an apocalyptic number.

181950163 is a deficient number, since it is larger than the sum of its proper divisors (1).

181950163 is an equidigital number, since it uses as much as digits as its factorization.

181950163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 181950163 is about 13488.8903546585. The cubic root of 181950163 is about 566.6533791963.

The spelling of 181950163 in words is "one hundred eighty-one million, nine hundred fifty thousand, one hundred sixty-three".