1826520120165 has 32 divisors (see below), whose sum is σ = 3147457783680. Its totient is φ = 899146158336.

The previous prime is 1826520120127. The next prime is 1826520120259. The reversal of 1826520120165 is 5610210256281.

It is not a de Polignac number, because 1826520120165 - 2¹⁰ = 1826520119141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2486899 + ... + 3136511.

It is an arithmetic number, because the mean of its divisors is an integer number (98358055740).

Almost surely, 2^{1826520120165} is an apocalyptic number.

1826520120165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1826520120165 is a deficient number, since it is larger than the sum of its proper divisors (1320937663515).

1826520120165 is a wasteful number, since it uses less digits than its factorization.

1826520120165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664053.

The product of its (nonzero) digits is 57600, while the sum is 39.

The spelling of 1826520120165 in words is "one trillion, eight hundred twenty-six billion, five hundred twenty million, one hundred twenty thousand, one hundred sixty-five".