1169928381 has 16 divisors (see below), whose sum is σ = 1575687168. Its totient is φ = 772090800.

The previous prime is 1169928367. The next prime is 1169928443. The reversal of 1169928381 is 1838299611.

It is not a de Polignac number, because 1169928381 - 2¹¹ = 1169926333 is a prime.

It is a super-2 number, since 2×1169928381² = 2737464833338562322, 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 1169928381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1169928581) 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, 165930 + ... + 172836.

It is an arithmetic number, because the mean of its divisors is an integer number (98480448).

Almost surely, 2^1169928381 is an apocalyptic number.

It is an amenable number.

1169928381 is a deficient number, since it is larger than the sum of its proper divisors (405758787).

1169928381 is a wasteful number, since it uses less digits than its factorization.

1169928381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7472.

The product of its digits is 186624, while the sum is 48.

The square root of 1169928381 is about 34204.2158366480. The cubic root of 1169928381 is about 1053.7067420316.

The spelling of 1169928381 in words is "one billion, one hundred sixty-nine million, nine hundred twenty-eight thousand, three hundred eighty-one".