1671290563 has 4 divisors (see below), whose sum is σ = 1672407000. Its totient is φ = 1670174128.

The previous prime is 1671290549. The next prime is 1671290567. The reversal of 1671290563 is 3650921761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3650921761 = 2153 ⋅1695737.

It is a cyclic number.

It is not a de Polignac number, because 1671290563 - 2²⁵ = 1637736131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1671290567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555970 + ... + 558967.

It is an arithmetic number, because the mean of its divisors is an integer number (418101750).

Almost surely, 2^1671290563 is an apocalyptic number.

1671290563 is a deficient number, since it is larger than the sum of its proper divisors (1116437).

1671290563 is a wasteful number, since it uses less digits than its factorization.

1671290563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116436.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 1671290563 is about 40881.4207556440. The cubic root of 1671290563 is about 1186.7265361457.

The spelling of 1671290563 in words is "one billion, six hundred seventy-one million, two hundred ninety thousand, five hundred sixty-three".