1642670672 has 20 divisors (see below), whose sum is σ = 3321052320. Its totient is φ = 785624928.

The previous prime is 1642670651. The next prime is 1642670719. The reversal of 1642670672 is 2760762461.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2231522 + ... + 2232257.

It is an arithmetic number, because the mean of its divisors is an integer number (166052616).

Almost surely, 2^1642670672 is an apocalyptic number.

It is an amenable number.

1642670672 is an abundant number, since it is smaller than the sum of its proper divisors (1678381648).

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

1642670672 is a wasteful number, since it uses less digits than its factorization.

1642670672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4463810 (or 4463804 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 1642670672 is about 40529.8738216639. The cubic root of 1642670672 is about 1179.9134936104.

The spelling of 1642670672 in words is "one billion, six hundred forty-two million, six hundred seventy thousand, six hundred seventy-two".