1672449684 has 24 divisors (see below), whose sum is σ = 3912689760. Its totient is φ = 556010784.

The previous prime is 1672449683. The next prime is 1672449703. The reversal of 1672449684 is 4869442761.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672449683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179319 + ... + 188414.

It is an arithmetic number, because the mean of its divisors is an integer number (163028740).

Almost surely, 2^1672449684 is an apocalyptic number.

It is an amenable number.

1672449684 is an abundant number, since it is smaller than the sum of its proper divisors (2240240076).

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

1672449684 is a wasteful number, since it uses less digits than its factorization.

1672449684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368119 (or 368117 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 1672449684 is about 40895.5949217028. The cubic root of 1672449684 is about 1187.0008235330. Note that the first 3 decimals are identical.

The spelling of 1672449684 in words is "one billion, six hundred seventy-two million, four hundred forty-nine thousand, six hundred eighty-four".