194405876612 has 12 divisors (see below), whose sum is σ = 340214847756. Its totient is φ = 97201634400.

The previous prime is 194405876551. The next prime is 194405876653. The reversal of 194405876612 is 216678504491.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 172278124096 + 22127752516 = 415064^2 + 148754^2 .

It is a super-2 number, since 2×194405876612² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60362 + ... + 626462.

It is an arithmetic number, because the mean of its divisors is an integer number (28351237313).

Almost surely, 2^194405876612 is an apocalyptic number.

It is an amenable number.

194405876612 is a deficient number, since it is larger than the sum of its proper divisors (145808971144).

194405876612 is a wasteful number, since it uses less digits than its factorization.

194405876612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651958 (or 651956 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 194405876612 in words is "one hundred ninety-four billion, four hundred five million, eight hundred seventy-six thousand, six hundred twelve".