1682442861 has 8 divisors (see below), whose sum is σ = 2447189664. Its totient is φ = 1019662320.

The previous prime is 1682442857. The next prime is 1682442863.

1682442861 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1682442861 - 2² = 1682442857 is a prime.

It is a super-2 number, since 2×1682442861² = 5661227961059730642, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1682442863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25491526 + ... + 25491591.

It is an arithmetic number, because the mean of its divisors is an integer number (305898708).

Almost surely, 2^1682442861 is an apocalyptic number.

1682442861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1682442861 is a deficient number, since it is larger than the sum of its proper divisors (764746803).

1682442861 is a wasteful number, since it uses less digits than its factorization.

1682442861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50983131.

The product of its digits is 147456, while the sum is 42.

The square root of 1682442861 is about 41017.5920916867. The cubic root of 1682442861 is about 1189.3603089238.

It can be divided in two parts, 16824 and 42861, that added together give a triangular number (59685 = T₃₄₅).

The spelling of 1682442861 in words is "one billion, six hundred eighty-two million, four hundred forty-two thousand, eight hundred sixty-one".