919481473 has 4 divisors (see below), whose sum is σ = 919543108. Its totient is φ = 919419840.

The previous prime is 919481441. The next prime is 919481491. The reversal of 919481473 is 374184919.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 418079809 + 501401664 = 20447^2 + 22392^2 .

It is a cyclic number.

It is not a de Polignac number, because 919481473 - 2⁵ = 919481441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (919487473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7165 + ... + 43477.

It is an arithmetic number, because the mean of its divisors is an integer number (229885777).

Almost surely, 2^919481473 is an apocalyptic number.

It is an amenable number.

919481473 is a deficient number, since it is larger than the sum of its proper divisors (61635).

919481473 is a wasteful number, since it uses less digits than its factorization.

919481473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61634.

The product of its digits is 217728, while the sum is 46.

The square root of 919481473 is about 30322.9529069977. The cubic root of 919481473 is about 972.4060695731.

The spelling of 919481473 in words is "nine hundred nineteen million, four hundred eighty-one thousand, four hundred seventy-three".