1636540414 has 16 divisors (see below), whose sum is σ = 2653851600. Its totient is φ = 754251264.

The previous prime is 1636540403. The next prime is 1636540417. The reversal of 1636540414 is 4140456361.

It is a self number, because there is not a number n which added to its sum of digits gives 1636540414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1636540417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580579 + ... + 583390.

It is an arithmetic number, because the mean of its divisors is an integer number (165865725).

Almost surely, 2^1636540414 is an apocalyptic number.

1636540414 is a deficient number, since it is larger than the sum of its proper divisors (1017311186).

1636540414 is a wasteful number, since it uses less digits than its factorization.

1636540414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164027.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 1636540414 is about 40454.1767188507. The cubic root of 1636540414 is about 1178.4438968232.

Adding to 1636540414 its reverse (4140456361), we get a palindrome (5776996775).

The spelling of 1636540414 in words is "one billion, six hundred thirty-six million, five hundred forty thousand, four hundred fourteen".