1019770459 has 4 divisors (see below), whose sum is σ = 1021635304. Its totient is φ = 1017905616.

The previous prime is 1019770457. The next prime is 1019770463. The reversal of 1019770459 is 9540779101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1019770459 - 2¹ = 1019770457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1019770457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 931602 + ... + 932695.

It is an arithmetic number, because the mean of its divisors is an integer number (255408826).

Almost surely, 2^1019770459 is an apocalyptic number.

1019770459 is a deficient number, since it is larger than the sum of its proper divisors (1864845).

1019770459 is an equidigital number, since it uses as much as digits as its factorization.

1019770459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864844.

The product of its (nonzero) digits is 79380, while the sum is 43.

The square root of 1019770459 is about 31933.8450393935. The cubic root of 1019770459 is about 1006.5471937045.

It can be divided in two parts, 10197 and 70459, that added together give a square (80656 = 284²).

The spelling of 1019770459 in words is "one billion, nineteen million, seven hundred seventy thousand, four hundred fifty-nine".