1681350804 has 48 divisors (see below), whose sum is σ = 4981782400. Its totient is φ = 480385728.

The previous prime is 1681350763. The next prime is 1681350817. The reversal of 1681350804 is 4080531861.

It is a super-2 number, since 2×1681350804² = 5653881052222892832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 15 ways as a sum of consecutive naturals, for example, 1111249 + ... + 1112760.

Almost surely, 2^1681350804 is an apocalyptic number.

1681350804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1681350804 is an abundant number, since it is smaller than the sum of its proper divisors (3300431596).

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

1681350804 is a wasteful number, since it uses less digits than its factorization.

1681350804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224029 (or 2224021 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1681350804 is about 41004.2778743877. The cubic root of 1681350804 is about 1189.1029192266.

The spelling of 1681350804 in words is "one billion, six hundred eighty-one million, three hundred fifty thousand, eight hundred four".