161854676 has 6 divisors (see below), whose sum is σ = 283245690. Its totient is φ = 80927336.

The previous prime is 161854669. The next prime is 161854691. The reversal of 161854676 is 676458161.

161854676 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 132802576 + 29052100 = 11524^2 + 5390^2 .

It is a super-2 number, since 2×161854676² = 52393872286129952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20231831 + ... + 20231838.

It is an arithmetic number, because the mean of its divisors is an integer number (47207615).

Almost surely, 2^161854676 is an apocalyptic number.

It is an amenable number.

161854676 is a deficient number, since it is larger than the sum of its proper divisors (121391014).

161854676 is a wasteful number, since it uses less digits than its factorization.

161854676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40463673 (or 40463671 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 161854676 is about 12722.2119146004. The cubic root of 161854676 is about 544.9731221489.

The spelling of 161854676 in words is "one hundred sixty-one million, eight hundred fifty-four thousand, six hundred seventy-six".