1982905896 has 32 divisors (see below), whose sum is σ = 4986959040. Its totient is φ = 657009408.

The previous prime is 1982905871. The next prime is 1982905909. The reversal of 1982905896 is 6985092891.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243361 + ... + 251376.

It is an arithmetic number, because the mean of its divisors is an integer number (155842470).

Almost surely, 2^1982905896 is an apocalyptic number.

It is an amenable number.

1982905896 is an abundant number, since it is smaller than the sum of its proper divisors (3004053144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1982905896 is a wasteful number, since it uses less digits than its factorization.

1982905896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494913 (or 494909 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 57.

The square root of 1982905896 is about 44529.8315289874. The cubic root of 1982905896 is about 1256.3212374939.

It can be divided in two parts, 1982 and 905896, that added together give a triangular number (907878 = T₁₃₄₇).

The spelling of 1982905896 in words is "one billion, nine hundred eighty-two million, nine hundred five thousand, eight hundred ninety-six".