1681474810 has 16 divisors (see below), whose sum is σ = 3131022600. Its totient is φ = 649397056.

The previous prime is 1681474801. The next prime is 1681474849. The reversal of 1681474810 is 184741861.

It can be written as a sum of positive squares in 4 ways, for example, as 916454529 + 765020281 = 30273^2 + 27659^2 .

It is a super-2 number, since 2×1681474810² = 5654715073329072200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2898805 + ... + 2899384.

Almost surely, 2^1681474810 is an apocalyptic number.

1681474810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1681474810 is a deficient number, since it is larger than the sum of its proper divisors (1449547790).

1681474810 is a wasteful number, since it uses less digits than its factorization.

1681474810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798225.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 1681474810 is about 41005.7899570292. The cubic root of 1681474810 is about 1189.1321521250.

The spelling of 1681474810 in words is "one billion, six hundred eighty-one million, four hundred seventy-four thousand, eight hundred ten".