1665040134 has 32 divisors (see below), whose sum is σ = 3376800000. Its totient is φ = 547281504.

The previous prime is 1665040123. The next prime is 1665040147. The reversal of 1665040134 is 4310405661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117567 + ... + 130965.

It is an arithmetic number, because the mean of its divisors is an integer number (105525000).

Almost surely, 2^1665040134 is an apocalyptic number.

1665040134 is an abundant number, since it is smaller than the sum of its proper divisors (1711759866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1665040134 is a wasteful number, since it uses less digits than its factorization.

1665040134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13692.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1665040134 is about 40804.9033083035. The cubic root of 1665040134 is about 1185.2452824165.

Adding to 1665040134 its reverse (4310405661), we get a palindrome (5975445795).

The spelling of 1665040134 in words is "one billion, six hundred sixty-five million, forty thousand, one hundred thirty-four".