1670216889 has 32 divisors (see below), whose sum is σ = 2511866880. Its totient is φ = 978264000.

The previous prime is 1670216887. The next prime is 1670216897. The reversal of 1670216889 is 9886120761.

It is not a de Polignac number, because 1670216889 - 2¹ = 1670216887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1670216887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179842 + ... + 188900.

It is an arithmetic number, because the mean of its divisors is an integer number (78495840).

Almost surely, 2^1670216889 is an apocalyptic number.

It is an amenable number.

1670216889 is a deficient number, since it is larger than the sum of its proper divisors (841649991).

1670216889 is a wasteful number, since it uses less digits than its factorization.

1670216889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9261.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 1670216889 is about 40868.2870817949. The cubic root of 1670216889 is about 1186.4723552547.

The spelling of 1670216889 in words is "one billion, six hundred seventy million, two hundred sixteen thousand, eight hundred eighty-nine".