1916089320 has 32 divisors (see below), whose sum is σ = 5748268320. Its totient is φ = 510957120.

The previous prime is 1916089297. The next prime is 1916089321. The reversal of 1916089320 is 239806191.

It is not an unprimeable number, because it can be changed into a prime (1916089321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7983586 + ... + 7983825.

It is an arithmetic number, because the mean of its divisors is an integer number (179633385).

Almost surely, 2^1916089320 is an apocalyptic number.

1916089320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1916089320 is an abundant number, since it is smaller than the sum of its proper divisors (3832179000).

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

1916089320 is a wasteful number, since it uses less digits than its factorization.

1916089320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15967425 (or 15967421 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1916089320 is about 43773.1575283301. The cubic root of 1916089320 is about 1242.0485821454.

The spelling of 1916089320 in words is "one billion, nine hundred sixteen million, eighty-nine thousand, three hundred twenty".