1638113084 has 12 divisors (see below), whose sum is σ = 2991337104. Its totient is φ = 783445344.

The previous prime is 1638113077. The next prime is 1638113143. The reversal of 1638113084 is 4803118361.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8902697 + ... + 8902880.

It is an arithmetic number, because the mean of its divisors is an integer number (249278092).

Almost surely, 2^1638113084 is an apocalyptic number.

It is an amenable number.

1638113084 is a deficient number, since it is larger than the sum of its proper divisors (1353224020).

1638113084 is a wasteful number, since it uses less digits than its factorization.

1638113084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17805604 (or 17805602 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1638113084 is about 40473.6097228799. The cubic root of 1638113084 is about 1178.8212599498.

The spelling of 1638113084 in words is "one billion, six hundred thirty-eight million, one hundred thirteen thousand, eighty-four".