8192161621 has 8 divisors (see below), whose sum is σ = 9363631104. Its totient is φ = 7020982320.

The previous prime is 8192161573. The next prime is 8192161633. The reversal of 8192161621 is 1261612918.

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 8192161621 - 2²⁷ = 8057943893 is a prime.

It is a super-2 number, since 2×8192161621² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8192161421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8245 + ... + 128266.

It is an arithmetic number, because the mean of its divisors is an integer number (1170453888).

Almost surely, 2^8192161621 is an apocalyptic number.

It is an amenable number.

8192161621 is a deficient number, since it is larger than the sum of its proper divisors (1171469483).

8192161621 is a wasteful number, since it uses less digits than its factorization.

8192161621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145091.

The product of its digits is 10368, while the sum is 37.

The square root of 8192161621 is about 90510.5608257954. The cubic root of 8192161621 is about 2015.8869368865.

The spelling of 8192161621 in words is "eight billion, one hundred ninety-two million, one hundred sixty-one thousand, six hundred twenty-one".