1681932623 has 4 divisors (see below), whose sum is σ = 1922208720. Its totient is φ = 1441656528.

The previous prime is 1681932607. The next prime is 1681932641. The reversal of 1681932623 is 3262391861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1681932623 - 2⁴ = 1681932607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681932653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120138038 + ... + 120138051.

It is an arithmetic number, because the mean of its divisors is an integer number (480552180).

Almost surely, 2^1681932623 is an apocalyptic number.

1681932623 is a deficient number, since it is larger than the sum of its proper divisors (240276097).

1681932623 is an equidigital number, since it uses as much as digits as its factorization.

1681932623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240276096.

The product of its digits is 93312, while the sum is 41.

The square root of 1681932623 is about 41011.3718741522. The cubic root of 1681932623 is about 1189.2400634963.

The spelling of 1681932623 in words is "one billion, six hundred eighty-one million, nine hundred thirty-two thousand, six hundred twenty-three".