161358853 has 2 divisors, whose sum is σ = 161358854. Its totient is φ = 161358852.

The previous prime is 161358839. The next prime is 161358877. The reversal of 161358853 is 358853161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93741124 + 67617729 = 9682^2 + 8223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161358853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161350853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80679426 + 80679427.

It is an arithmetic number, because the mean of its divisors is an integer number (80679427).

Almost surely, 2^161358853 is an apocalyptic number.

It is an amenable number.

161358853 is a deficient number, since it is larger than the sum of its proper divisors (1).

161358853 is an equidigital number, since it uses as much as digits as its factorization.

161358853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 40.

The square root of 161358853 is about 12702.7104587958. The cubic root of 161358853 is about 544.4160656487.

The spelling of 161358853 in words is "one hundred sixty-one million, three hundred fifty-eight thousand, eight hundred fifty-three".