3661499912 has 48 divisors (see below), whose sum is σ = 8136908460. Its totient is φ = 1539597696.

The previous prime is 3661499887. The next prime is 3661499917. The reversal of 3661499912 is 2199941663.

It can be written as a sum of positive squares in 2 ways, for example, as 2982688996 + 678810916 = 54614^2 + 26054^2 .

It is not an unprimeable number, because it can be changed into a prime (3661499917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67343 + ... + 108894.

Almost surely, 2^3661499912 is an apocalyptic number.

It is an amenable number.

3661499912 is an abundant number, since it is smaller than the sum of its proper divisors (4475408548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3661499912 is a wasteful number, since it uses less digits than its factorization.

3661499912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176310 (or 176299 counting only the distinct ones).

The product of its digits is 629856, while the sum is 50.

The square root of 3661499912 is about 60510.3289695239. The cubic root of 3661499912 is about 1541.2970340143.

The spelling of 3661499912 in words is "three billion, six hundred sixty-one million, four hundred ninety-nine thousand, nine hundred twelve".