161736853 has 2 divisors, whose sum is σ = 161736854. Its totient is φ = 161736852.

The previous prime is 161736811. The next prime is 161736863. The reversal of 161736853 is 358637161.

It is a happy number.

161736853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159946609 + 1790244 = 12647^2 + 1338^2 .

It is a cyclic number.

It is not a de Polignac number, because 161736853 - 2¹³ = 161728661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161736863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80868426 + 80868427.

It is an arithmetic number, because the mean of its divisors is an integer number (80868427).

Almost surely, 2^161736853 is an apocalyptic number.

It is an amenable number.

161736853 is a deficient number, since it is larger than the sum of its proper divisors (1).

161736853 is an equidigital number, since it uses as much as digits as its factorization.

161736853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 161736853 is about 12717.5804695705. The cubic root of 161736853 is about 544.8408513226.

The spelling of 161736853 in words is "one hundred sixty-one million, seven hundred thirty-six thousand, eight hundred fifty-three".