1680934155 has 16 divisors (see below), whose sum is σ = 2714632704. Its totient is φ = 888118880.

The previous prime is 1680934141. The next prime is 1680934169. The reversal of 1680934155 is 5514390861.

It is an interprime number because it is at equal distance from previous prime (1680934141) and next prime (1680934169).

It is not a de Polignac number, because 1680934155 - 2¹¹ = 1680932107 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 522051 + ... + 525260.

It is an arithmetic number, because the mean of its divisors is an integer number (169664544).

Almost surely, 2^1680934155 is an apocalyptic number.

1680934155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1680934155 is a deficient number, since it is larger than the sum of its proper divisors (1033698549).

1680934155 is a wasteful number, since it uses less digits than its factorization.

1680934155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047426.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 1680934155 is about 40999.1970043317. The cubic root of 1680934155 is about 1189.0046887897.

It can be divided in two parts, 1 and 680934155, that added together give a triangular number (680934156 = T₃₆₉₀₃).

The spelling of 1680934155 in words is "one billion, six hundred eighty million, nine hundred thirty-four thousand, one hundred fifty-five".