181483173953 has 2 divisors, whose sum is σ = 181483173954. Its totient is φ = 181483173952.

The previous prime is 181483173857. The next prime is 181483173967. The reversal of 181483173953 is 359371384181.

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., 177739814464 + 3743359489 = 421592^2 + 61183^2 .

It is a cyclic number.

It is not a de Polignac number, because 181483173953 - 2¹⁰ = 181483172929 is a prime.

It is a super-2 number, since 2×181483173953² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 181483173895 and 181483173904.

It is not a weakly prime, because it can be changed into another prime (181483103953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90741586976 + 90741586977.

It is an arithmetic number, because the mean of its divisors is an integer number (90741586977).

Almost surely, 2^181483173953 is an apocalyptic number.

It is an amenable number.

181483173953 is a deficient number, since it is larger than the sum of its proper divisors (1).

181483173953 is an equidigital number, since it uses as much as digits as its factorization.

181483173953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 53.

The spelling of 181483173953 in words is "one hundred eighty-one billion, four hundred eighty-three million, one hundred seventy-three thousand, nine hundred fifty-three".