3640263121 has 8 divisors (see below), whose sum is σ = 3991356864. Its totient is φ = 3292529520.

The previous prime is 3640263119. The next prime is 3640263127. The reversal of 3640263121 is 1213620463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3640263121 - 2¹ = 3640263119 is a prime.

It is a super-2 number, since 2×3640263121² = 26503031180225321282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3640263121.

It is not an unprimeable number, because it can be changed into a prime (3640263127) 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, 837765 + ... + 842098.

It is an arithmetic number, because the mean of its divisors is an integer number (498919608).

Almost surely, 2^3640263121 is an apocalyptic number.

It is an amenable number.

3640263121 is a deficient number, since it is larger than the sum of its proper divisors (351093743).

3640263121 is a wasteful number, since it uses less digits than its factorization.

3640263121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680071.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 3640263121 is about 60334.5930706423. The cubic root of 3640263121 is about 1538.3114005304.

Adding to 3640263121 its reverse (1213620463), we get a palindrome (4853883584).

The spelling of 3640263121 in words is "three billion, six hundred forty million, two hundred sixty-three thousand, one hundred twenty-one".