1489805916 has 24 divisors (see below), whose sum is σ = 3487545600. Its totient is φ = 494983152.

The previous prime is 1489805881. The next prime is 1489805939. The reversal of 1489805916 is 6195089841.

It is a congruent number.

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, 198516 + ... + 205883.

It is an arithmetic number, because the mean of its divisors is an integer number (145314400).

Almost surely, 2^1489805916 is an apocalyptic number.

It is an amenable number.

1489805916 is an abundant number, since it is smaller than the sum of its proper divisors (1997739684).

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

1489805916 is a wasteful number, since it uses less digits than its factorization.

1489805916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404713 (or 404711 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 1489805916 is about 38598.0040416600. The cubic root of 1489805916 is about 1142.1151651069.

The spelling of 1489805916 in words is "one billion, four hundred eighty-nine million, eight hundred five thousand, nine hundred sixteen".