396105181922 has 6 divisors (see below), whose sum is σ = 594159107979. Its totient is φ = 198052145930.

The previous prime is 396105181921. The next prime is 396105181951. The reversal of 396105181922 is 229181501693.

It can be written as a sum of positive squares in only one way, i.e., 198052590961 + 198052590961 = 445031^2 + 445031^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=445031.

It is a super-2 number, since 2×396105181922² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396105181921) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 667547 + ... + 1112577.

Almost surely, 2^396105181922 is an apocalyptic number.

396105181922 is a deficient number, since it is larger than the sum of its proper divisors (198053926057).

396105181922 is an frugal number, since it uses more digits than its factorization.

396105181922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890064 (or 445033 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 396105181922 in words is "three hundred ninety-six billion, one hundred five million, one hundred eighty-one thousand, nine hundred twenty-two".