3641668557 has 16 divisors (see below), whose sum is σ = 4892375808. Its totient is φ = 2409431040.

The previous prime is 3641668553. The next prime is 3641668571. The reversal of 3641668557 is 7558661463.

It is not a de Polignac number, because 3641668557 - 2² = 3641668553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3641668553) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 242253 + ... + 256845.

It is an arithmetic number, because the mean of its divisors is an integer number (305773488).

Almost surely, 2^3641668557 is an apocalyptic number.

It is an amenable number.

3641668557 is a deficient number, since it is larger than the sum of its proper divisors (1250707251).

3641668557 is a wasteful number, since it uses less digits than its factorization.

3641668557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15220.

The product of its digits is 3628800, while the sum is 51.

The square root of 3641668557 is about 60346.2389631699. The cubic root of 3641668557 is about 1538.5093459329.

The spelling of 3641668557 in words is "three billion, six hundred forty-one million, six hundred sixty-eight thousand, five hundred fifty-seven".