1928481247 has 16 divisors (see below), whose sum is σ = 2530886400. Its totient is φ = 1423621440.

The previous prime is 1928481221. The next prime is 1928481251. The reversal of 1928481247 is 7421848291.

It is a cyclic number.

It is not a de Polignac number, because 1928481247 - 2¹⁵ = 1928448479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1928481197 and 1928481206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1928481287) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 657622 + ... + 660547.

It is an arithmetic number, because the mean of its divisors is an integer number (158180400).

Almost surely, 2^1928481247 is an apocalyptic number.

1928481247 is a deficient number, since it is larger than the sum of its proper divisors (602405153).

1928481247 is a wasteful number, since it uses less digits than its factorization.

1928481247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318206.

The product of its digits is 258048, while the sum is 46.

The square root of 1928481247 is about 43914.4765083224. The cubic root of 1928481247 is about 1244.7203980645.

The spelling of 1928481247 in words is "one billion, nine hundred twenty-eight million, four hundred eighty-one thousand, two hundred forty-seven".