8161892 has 6 divisors (see below), whose sum is σ = 14283318. Its totient is φ = 4080944.

The previous prime is 8161889. The next prime is 8161903. The reversal of 8161892 is 2981618.

It can be written as a sum of positive squares in only one way, i.e., 6584356 + 1577536 = 2566^2 + 1256^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

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, 1020233 + ... + 1020240.

It is an arithmetic number, because the mean of its divisors is an integer number (2380553).

Almost surely, 2^8161892 is an apocalyptic number.

It is an amenable number.

8161892 is a deficient number, since it is larger than the sum of its proper divisors (6121426).

8161892 is a wasteful number, since it uses less digits than its factorization.

8161892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040477 (or 2040475 counting only the distinct ones).

The product of its digits is 6912, while the sum is 35.

The square root of 8161892 is about 2856.9025184630. The cubic root of 8161892 is about 201.3401005966.

The spelling of 8161892 in words is "eight million, one hundred sixty-one thousand, eight hundred ninety-two".