1681501038 has 32 divisors (see below), whose sum is σ = 3947311104. Its totient is φ = 467443872.

The previous prime is 1681501037. The next prime is 1681501057. The reversal of 1681501038 is 8301051861.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681501037) 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 15 ways as a sum of consecutive naturals, for example, 539470 + ... + 542577.

It is an arithmetic number, because the mean of its divisors is an integer number (123353472).

Almost surely, 2^1681501038 is an apocalyptic number.

1681501038 is an abundant number, since it is smaller than the sum of its proper divisors (2265810066).

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

1681501038 is a wasteful number, since it uses less digits than its factorization.

1681501038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082096.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 1681501038 is about 41006.1097642778. The cubic root of 1681501038 is about 1189.1383348712.

Adding to 1681501038 its reverse (8301051861), we get a palindrome (9982552899).

The spelling of 1681501038 in words is "one billion, six hundred eighty-one million, five hundred one thousand, thirty-eight".