1260380769 has 8 divisors (see below), whose sum is σ = 1682129280. Its totient is φ = 839443056.

The previous prime is 1260380761. The next prime is 1260380809. The reversal of 1260380769 is 9670830621.

It is a happy number.

1260380769 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1260380769 - 2³ = 1260380761 is a prime.

It is a super-2 number, since 2×1260380769² = 3177119365730062722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1260380769.

It is not an unprimeable number, because it can be changed into a prime (1260380761) 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, 199062 + ... + 205295.

It is an arithmetic number, because the mean of its divisors is an integer number (210266160).

Almost surely, 2^1260380769 is an apocalyptic number.

It is an amenable number.

1260380769 is a deficient number, since it is larger than the sum of its proper divisors (421748511).

1260380769 is a wasteful number, since it uses less digits than its factorization.

1260380769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405399.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 1260380769 is about 35501.8417691252. The cubic root of 1260380769 is about 1080.1910867305.

The spelling of 1260380769 in words is "one billion, two hundred sixty million, three hundred eighty thousand, seven hundred sixty-nine".