1611212198 has 8 divisors (see below), whose sum is σ = 2544019320. Its totient is φ = 763205760.

The previous prime is 1611212173. The next prime is 1611212203. The reversal of 1611212198 is 8912121161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21200123 + ... + 21200198.

It is an arithmetic number, because the mean of its divisors is an integer number (318002415).

Almost surely, 2^1611212198 is an apocalyptic number.

1611212198 is a deficient number, since it is larger than the sum of its proper divisors (932807122).

1611212198 is a wasteful number, since it uses less digits than its factorization.

1611212198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42400342.

The product of its digits is 1728, while the sum is 32.

The square root of 1611212198 is about 40139.9077976021. The cubic root of 1611212198 is about 1172.3327937620.

The spelling of 1611212198 in words is "one billion, six hundred eleven million, two hundred twelve thousand, one hundred ninety-eight".