1071681369 has 16 divisors (see below), whose sum is σ = 1585232640. Its totient is φ = 638494160.

The previous prime is 1071681361. The next prime is 1071681371. The reversal of 1071681369 is 9631861701.

It is a cyclic number.

It is not a de Polignac number, because 1071681369 - 2³ = 1071681361 is a prime.

It is a super-2 number, since 2×1071681369² = 2297001913323428322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1071681369.

It is not an unprimeable number, because it can be changed into a prime (1071681361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273267 + ... + 277160.

It is an arithmetic number, because the mean of its divisors is an integer number (99077040).

Almost surely, 2^1071681369 is an apocalyptic number.

It is an amenable number.

1071681369 is a deficient number, since it is larger than the sum of its proper divisors (513551271).

1071681369 is a wasteful number, since it uses less digits than its factorization.

1071681369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550500.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 1071681369 is about 32736.5448543367. The cubic root of 1071681369 is about 1023.3445795772.

The spelling of 1071681369 in words is "one billion, seventy-one million, six hundred eighty-one thousand, three hundred sixty-nine".