1957189166 has 8 divisors (see below), whose sum is σ = 2946232224. Its totient is φ = 975111760.

The previous prime is 1957189151. The next prime is 1957189187. The reversal of 1957189166 is 6619817591.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1740710 + ... + 1741833.

It is an arithmetic number, because the mean of its divisors is an integer number (368279028).

Almost surely, 2^1957189166 is an apocalyptic number.

1957189166 is a deficient number, since it is larger than the sum of its proper divisors (989043058).

1957189166 is a wasteful number, since it uses less digits than its factorization.

1957189166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482826.

The product of its digits is 816480, while the sum is 53.

The square root of 1957189166 is about 44240.1307186134. The cubic root of 1957189166 is about 1250.8664213924.

The spelling of 1957189166 in words is "one billion, nine hundred fifty-seven million, one hundred eighty-nine thousand, one hundred sixty-six".