3649215492131 has 16 divisors (see below), whose sum is σ = 4012829859840. Its totient is φ = 3290919166080.

The previous prime is 3649215492107. The next prime is 3649215492227. The reversal of 3649215492131 is 1312945129463.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3649215492131 is a prime.

It is a super-2 number, since 2×3649215492131² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3649215492131.

It is not an unprimeable number, because it can be changed into a prime (3649215492631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10841195 + ... + 11172731.

It is an arithmetic number, because the mean of its divisors is an integer number (250801866240).

Almost surely, 2^{3649215492131} is an apocalyptic number.

3649215492131 is a deficient number, since it is larger than the sum of its proper divisors (363614367709).

3649215492131 is a wasteful number, since it uses less digits than its factorization.

3649215492131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339554.

The product of its digits is 1399680, while the sum is 50.

The spelling of 3649215492131 in words is "three trillion, six hundred forty-nine billion, two hundred fifteen million, four hundred ninety-two thousand, one hundred thirty-one".