1909969504 has 24 divisors (see below), whose sum is σ = 3794757120. Its totient is φ = 946221696.

The previous prime is 1909969487. The next prime is 1909969553. The reversal of 1909969504 is 4059699091.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270304 + ... + 277279.

It is an arithmetic number, because the mean of its divisors is an integer number (158114880).

Almost surely, 2^1909969504 is an apocalyptic number.

It is an amenable number.

1909969504 is a deficient number, since it is larger than the sum of its proper divisors (1884787616).

1909969504 is a wasteful number, since it uses less digits than its factorization.

1909969504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547702 (or 547694 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 52.

The square root of 1909969504 is about 43703.1978692635. The cubic root of 1909969504 is about 1240.7248415602.

The spelling of 1909969504 in words is "one billion, nine hundred nine million, nine hundred sixty-nine thousand, five hundred four".