3642635011 has 6 divisors (see below), whose sum is σ = 3649372412. Its totient is φ = 3635910000.

The previous prime is 3642634981. The next prime is 3642635023. The reversal of 3642635011 is 1105362463.

It is not a de Polignac number, because 3642635011 - 2⁵ = 3642634979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3642635081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 318136 + ... + 329386.

Almost surely, 2^3642635011 is an apocalyptic number.

3642635011 is a deficient number, since it is larger than the sum of its proper divisors (6737401).

3642635011 is an frugal number, since it uses more digits than its factorization.

3642635011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12389 (or 11820 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 3642635011 is about 60354.2460063913. The cubic root of 3642635011 is about 1538.6454343745.

Adding to 3642635011 its reverse (1105362463), we get a palindrome (4747997474).

The spelling of 3642635011 in words is "three billion, six hundred forty-two million, six hundred thirty-five thousand, eleven".