161764853 has 4 divisors (see below), whose sum is σ = 163038720. Its totient is φ = 160490988.

The previous prime is 161764831. The next prime is 161764859. The reversal of 161764853 is 358467161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161764853 - 2¹² = 161760757 is a prime.

It is a super-2 number, since 2×161764853² = 52335735332223218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161764853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161764859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636743 + ... + 636996.

It is an arithmetic number, because the mean of its divisors is an integer number (40759680).

Almost surely, 2^161764853 is an apocalyptic number.

It is an amenable number.

161764853 is a deficient number, since it is larger than the sum of its proper divisors (1273867).

161764853 is a wasteful number, since it uses less digits than its factorization.

161764853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273866.

The product of its digits is 120960, while the sum is 41.

The square root of 161764853 is about 12718.6812602565. The cubic root of 161764853 is about 544.8722905880.

The spelling of 161764853 in words is "one hundred sixty-one million, seven hundred sixty-four thousand, eight hundred fifty-three".