1908973564 has 12 divisors (see below), whose sum is σ = 3353124600. Its totient is φ = 950937968.

The previous prime is 1908973513. The next prime is 1908973609. The reversal of 1908973564 is 4653798091.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885994 + ... + 888145.

It is an arithmetic number, because the mean of its divisors is an integer number (279427050).

Almost surely, 2^1908973564 is an apocalyptic number.

It is an amenable number.

1908973564 is a deficient number, since it is larger than the sum of its proper divisors (1444151036).

1908973564 is a wasteful number, since it uses less digits than its factorization.

1908973564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774412 (or 1774410 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 1908973564 is about 43691.8020228051. The cubic root of 1908973564 is about 1240.5091483535.

The spelling of 1908973564 in words is "one billion, nine hundred eight million, nine hundred seventy-three thousand, five hundred sixty-four".