7161903828 has 36 divisors (see below), whose sum is σ = 18118687860. Its totient is φ = 2385325056.

The previous prime is 7161903817. The next prime is 7161903863. The reversal of 7161903828 is 8283091617.

7161903828 is a `hidden beast` number, since 7 + 1 + 619 + 0 + 3 + 8 + 28 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2827261584 + 4334642244 = 53172^2 + 65838^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37923 + ... + 125546.

It is an arithmetic number, because the mean of its divisors is an integer number (503296885).

Almost surely, 2^7161903828 is an apocalyptic number.

It is an amenable number.

7161903828 is an abundant number, since it is smaller than the sum of its proper divisors (10956784032).

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

7161903828 is a wasteful number, since it uses less digits than its factorization.

7161903828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164696 (or 164691 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 7161903828 is about 84628.0321642894. The cubic root of 7161903828 is about 1927.5670550539.

The spelling of 7161903828 in words is "seven billion, one hundred sixty-one million, nine hundred three thousand, eight hundred twenty-eight".