1000040165 has 4 divisors (see below), whose sum is σ = 1200048204. Its totient is φ = 800032128.

The previous prime is 1000040141. The next prime is 1000040179. The reversal of 1000040165 is 5610400001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 129436129 + 870604036 = 11377^2 + 29506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000040165 is a prime.

It is a super-2 number, since 2×1000040165² = 2000160663226454450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100004012 + ... + 100004021.

It is an arithmetic number, because the mean of its divisors is an integer number (300012051).

Almost surely, 2^1000040165 is an apocalyptic number.

It is an amenable number.

1000040165 is a deficient number, since it is larger than the sum of its proper divisors (200008039).

1000040165 is an equidigital number, since it uses as much as digits as its factorization.

1000040165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200008038.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1000040165 is about 31623.4116597182. The cubic root of 1000040165 is about 1000.0133881541.

Adding to 1000040165 its reverse (5610400001), we get a palindrome (6610440166).

The spelling of 1000040165 in words is "one billion, forty thousand, one hundred sixty-five".