1641164473 has 16 divisors (see below), whose sum is σ = 1802808000. Its totient is φ = 1484735040.

The previous prime is 1641164461. The next prime is 1641164477. The reversal of 1641164473 is 3744611461.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1641164473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1641164477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264618 + ... + 270748.

It is an arithmetic number, because the mean of its divisors is an integer number (112675500).

Almost surely, 2^1641164473 is an apocalyptic number.

1641164473 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1641164473 is a deficient number, since it is larger than the sum of its proper divisors (161643527).

1641164473 is a wasteful number, since it uses less digits than its factorization.

1641164473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6552.

The product of its digits is 48384, while the sum is 37.

The square root of 1641164473 is about 40511.2882169896. The cubic root of 1641164473 is about 1179.5527542343.

The spelling of 1641164473 in words is "one billion, six hundred forty-one million, one hundred sixty-four thousand, four hundred seventy-three".