1671091066 has 8 divisors (see below), whose sum is σ = 2506863744. Its totient is φ = 835469820.

The previous prime is 1671091001. The next prime is 1671091067. The reversal of 1671091066 is 6601901761.

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

It is not an unprimeable number, because it can be changed into a prime (1671091067) 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, 4330 + ... + 57973.

It is an arithmetic number, because the mean of its divisors is an integer number (313357968).

Almost surely, 2^1671091066 is an apocalyptic number.

1671091066 is a deficient number, since it is larger than the sum of its proper divisors (835772678).

1671091066 is a wasteful number, since it uses less digits than its factorization.

1671091066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75716.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1671091066 is about 40878.9807358256. The cubic root of 1671091066 is about 1186.6793155906.

The spelling of 1671091066 in words is "one billion, six hundred seventy-one million, ninety-one thousand, sixty-six".