1955681683 has 8 divisors (see below), whose sum is σ = 2073088080. Its totient is φ = 1838538240.

The previous prime is 1955681681. The next prime is 1955681737. The reversal of 1955681683 is 3861865591.

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

It is a cyclic number.

It is not a de Polignac number, because 1955681683 - 2¹ = 1955681681 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1955681683.

It is not an unprimeable number, because it can be changed into a prime (1955681681) 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, 50313 + ... + 80266.

It is an arithmetic number, because the mean of its divisors is an integer number (259136010).

Almost surely, 2^1955681683 is an apocalyptic number.

1955681683 is a deficient number, since it is larger than the sum of its proper divisors (117406397).

1955681683 is a wasteful number, since it uses less digits than its factorization.

1955681683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131477.

The product of its digits is 1555200, while the sum is 52.

The square root of 1955681683 is about 44223.0899304877. The cubic root of 1955681683 is about 1250.5451878882.

The spelling of 1955681683 in words is "one billion, nine hundred fifty-five million, six hundred eighty-one thousand, six hundred eighty-three".