612121194 has 24 divisors (see below), whose sum is σ = 1326894660. Its totient is φ = 203943168.

The previous prime is 612121189. The next prime is 612121201. The reversal of 612121194 is 491121216.

612121194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 609447969 + 2673225 = 24687^2 + 1635^2 .

It is a super-2 number, since 2×612121194² = 749384712287971272, which contains 22 as substring.

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, 37722 + ... + 51450.

Almost surely, 2^612121194 is an apocalyptic number.

612121194 is an abundant number, since it is smaller than the sum of its proper divisors (714773466).

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

612121194 is a wasteful number, since it uses less digits than its factorization.

612121194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16214 (or 16211 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 612121194 is about 24741.0831209953. The cubic root of 612121194 is about 849.0745147216.

The spelling of 612121194 in words is "six hundred twelve million, one hundred twenty-one thousand, one hundred ninety-four".