1683381087 has 12 divisors (see below), whose sum is σ = 2432659944. Its totient is φ = 1121742000.

The previous prime is 1683381079. The next prime is 1683381101. The reversal of 1683381087 is 7801833861.

It is not a de Polignac number, because 1683381087 - 2³ = 1683381079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1683381787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21288 + ... + 61805.

It is an arithmetic number, because the mean of its divisors is an integer number (202721662).

Almost surely, 2^1683381087 is an apocalyptic number.

1683381087 is a deficient number, since it is larger than the sum of its proper divisors (749278857).

1683381087 is a wasteful number, since it uses less digits than its factorization.

1683381087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85350 (or 85347 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1683381087 is about 41029.0273708749. The cubic root of 1683381087 is about 1189.5813528649.

The spelling of 1683381087 in words is "one billion, six hundred eighty-three million, three hundred eighty-one thousand, eighty-seven".