1379823165 has 24 divisors (see below), whose sum is σ = 2733364608. Its totient is φ = 630776160.

The previous prime is 1379823163. The next prime is 1379823167. The reversal of 1379823165 is 5613289731.

It is an interprime number because it is at equal distance from previous prime (1379823163) and next prime (1379823167).

It is not a de Polignac number, because 1379823165 - 2¹ = 1379823163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1379823165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379823163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2189881 + ... + 2190510.

It is an arithmetic number, because the mean of its divisors is an integer number (113890192).

Almost surely, 2^1379823165 is an apocalyptic number.

1379823165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1379823165 is a deficient number, since it is larger than the sum of its proper divisors (1353541443).

1379823165 is a wasteful number, since it uses less digits than its factorization.

1379823165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380409 (or 4380406 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 1379823165 is about 37145.9710466694. The cubic root of 1379823165 is about 1113.2887247018.

It can be divided in two parts, 13798 and 23165, that added together give a palindrome (36963).

The spelling of 1379823165 in words is "one billion, three hundred seventy-nine million, eight hundred twenty-three thousand, one hundred sixty-five".