1671957166 has 8 divisors (see below), whose sum is σ = 2735929944. Its totient is φ = 759980520.

The previous prime is 1671957143. The next prime is 1671957169. The reversal of 1671957166 is 6617591761.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671957169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37999005 + ... + 37999048.

It is an arithmetic number, because the mean of its divisors is an integer number (341991243).

Almost surely, 2^1671957166 is an apocalyptic number.

1671957166 is a deficient number, since it is larger than the sum of its proper divisors (1063972778).

1671957166 is a wasteful number, since it uses less digits than its factorization.

1671957166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75998066.

The product of its digits is 476280, while the sum is 49.

The square root of 1671957166 is about 40889.5728273114. The cubic root of 1671957166 is about 1186.8842925397.

The spelling of 1671957166 in words is "one billion, six hundred seventy-one million, nine hundred fifty-seven thousand, one hundred sixty-six".