8161379352 has 48 divisors (see below), whose sum is σ = 25261413840. Its totient is φ = 2331822528.

The previous prime is 8161379333. The next prime is 8161379371. The reversal of 8161379352 is 2539731618.

It is an interprime number because it is at equal distance from previous prime (8161379333) and next prime (8161379371).

It is a super-2 number, since 2×8161379352² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8161379298 and 8161379307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8096103 + ... + 8097110.

It is an arithmetic number, because the mean of its divisors is an integer number (526279455).

Almost surely, 2^8161379352 is an apocalyptic number.

It is an amenable number.

8161379352 is an abundant number, since it is smaller than the sum of its proper divisors (17100034488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8161379352 is a wasteful number, since it uses less digits than its factorization.

8161379352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16193232 (or 16193225 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 8161379352 is about 90340.3528441194. The cubic root of 8161379352 is about 2013.3588512133.

The spelling of 8161379352 in words is "eight billion, one hundred sixty-one million, three hundred seventy-nine thousand, three hundred fifty-two".