161773633 has 8 divisors (see below), whose sum is σ = 185068800. Its totient is φ = 138524640.

The previous prime is 161773631. The next prime is 161773643. The reversal of 161773633 is 336377161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161773633 - 2¹ = 161773631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161773592 and 161773601.

It is not an unprimeable number, because it can be changed into a prime (161773631) 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 in 7 ways as a sum of consecutive naturals, for example, 3673 + ... + 18358.

It is an arithmetic number, because the mean of its divisors is an integer number (23133600).

Almost surely, 2^161773633 is an apocalyptic number.

It is an amenable number.

161773633 is a deficient number, since it is larger than the sum of its proper divisors (23295167).

161773633 is a wasteful number, since it uses less digits than its factorization.

161773633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23087.

The product of its digits is 47628, while the sum is 37.

The square root of 161773633 is about 12719.0264171437. The cubic root of 161773633 is about 544.8821482963.

The spelling of 161773633 in words is "one hundred sixty-one million, seven hundred seventy-three thousand, six hundred thirty-three".