1673571864 has 64 divisors (see below), whose sum is σ = 4388544000. Its totient is φ = 531218304.

The previous prime is 1673571829. The next prime is 1673571869. The reversal of 1673571864 is 4681753761.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673571869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21687 + ... + 61785.

It is an arithmetic number, because the mean of its divisors is an integer number (68571000).

Almost surely, 2^1673571864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1673571864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2194272000).

1673571864 is an abundant number, since it is smaller than the sum of its proper divisors (2714972136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1673571864 is a wasteful number, since it uses less digits than its factorization.

1673571864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40192 (or 40188 counting only the distinct ones).

The product of its digits is 846720, while the sum is 48.

The square root of 1673571864 is about 40909.3126806110. The cubic root of 1673571864 is about 1187.2662487127.

The spelling of 1673571864 in words is "one billion, six hundred seventy-three million, five hundred seventy-one thousand, eight hundred sixty-four".