1641653272 has 24 divisors (see below), whose sum is σ = 3580647660. Its totient is φ = 703565520.

The previous prime is 1641653261. The next prime is 1641653287. The reversal of 1641653272 is 2723561461.

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 5 ways as a sum of consecutive naturals, for example, 2093554 + ... + 2094337.

Almost surely, 2^1641653272 is an apocalyptic number.

It is an amenable number.

1641653272 is an abundant number, since it is smaller than the sum of its proper divisors (1938994388).

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

1641653272 is a wasteful number, since it uses less digits than its factorization.

1641653272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4187911 (or 4187900 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 1641653272 is about 40517.3206419181. The cubic root of 1641653272 is about 1179.6698473076.

The spelling of 1641653272 in words is "one billion, six hundred forty-one million, six hundred fifty-three thousand, two hundred seventy-two".