3646418131 has 4 divisors (see below), whose sum is σ = 3678687432. Its totient is φ = 3614148832.

The previous prime is 3646418119. The next prime is 3646418141. The reversal of 3646418131 is 1318146463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1318146463 = 16369 ⋅80527.

It is a cyclic number.

It is not a de Polignac number, because 3646418131 - 2¹³ = 3646409939 is a prime.

It is a super-2 number, since 2×3646418131² = 26592730372171066322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3646418141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16134481 + ... + 16134706.

It is an arithmetic number, because the mean of its divisors is an integer number (919671858).

Almost surely, 2^3646418131 is an apocalyptic number.

3646418131 is a deficient number, since it is larger than the sum of its proper divisors (32269301).

3646418131 is a wasteful number, since it uses less digits than its factorization.

3646418131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32269300.

The product of its digits is 41472, while the sum is 37.

The square root of 3646418131 is about 60385.5788330293. The cubic root of 3646418131 is about 1539.1779121308.

The spelling of 3646418131 in words is "three billion, six hundred forty-six million, four hundred eighteen thousand, one hundred thirty-one".