161766913 has 8 divisors (see below), whose sum is σ = 201683520. Its totient is φ = 126052080.

The previous prime is 161766907. The next prime is 161766919. The reversal of 161766913 is 319667161.

It is an interprime number because it is at equal distance from previous prime (161766907) and next prime (161766919).

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

It is not a de Polignac number, because 161766913 - 2⁵ = 161766881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161766919) 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, 1050358 + ... + 1050511.

It is an arithmetic number, because the mean of its divisors is an integer number (25210440).

Almost surely, 2^161766913 is an apocalyptic number.

It is an amenable number.

161766913 is a deficient number, since it is larger than the sum of its proper divisors (39916607).

161766913 is a wasteful number, since it uses less digits than its factorization.

161766913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100887.

The product of its digits is 40824, while the sum is 40.

The square root of 161766913 is about 12718.7622432374. The cubic root of 161766913 is about 544.8746034764.

The spelling of 161766913 in words is "one hundred sixty-one million, seven hundred sixty-six thousand, nine hundred thirteen".