1681331036 has 48 divisors (see below), whose sum is σ = 3718659840. Its totient is φ = 646081920.

The previous prime is 1681331021. The next prime is 1681331051. The reversal of 1681331036 is 6301331861.

It is an interprime number because it is at equal distance from previous prime (1681331021) and next prime (1681331051).

It is a super-3 number, since 3×1681331036³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1681330993 and 1681331011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14906 + ... + 59873.

It is an arithmetic number, because the mean of its divisors is an integer number (77472080).

Almost surely, 2^1681331036 is an apocalyptic number.

It is an amenable number.

1681331036 is an abundant number, since it is smaller than the sum of its proper divisors (2037328804).

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

1681331036 is a wasteful number, since it uses less digits than its factorization.

1681331036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74874 (or 74872 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1681331036 is about 41004.0368256590. The cubic root of 1681331036 is about 1189.0982590295.

Adding to 1681331036 its reverse (6301331861), we get a palindrome (7982662897).

The spelling of 1681331036 in words is "one billion, six hundred eighty-one million, three hundred thirty-one thousand, thirty-six".