361640012 has 6 divisors (see below), whose sum is σ = 632870028. Its totient is φ = 180820004.

The previous prime is 361640011. The next prime is 361640033. The reversal of 361640012 is 210046163.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 361640012.

It is not an unprimeable number, because it can be changed into a prime (361640011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45204998 + ... + 45205005.

It is an arithmetic number, because the mean of its divisors is an integer number (105478338).

Almost surely, 2^361640012 is an apocalyptic number.

It is an amenable number.

361640012 is a deficient number, since it is larger than the sum of its proper divisors (271230016).

361640012 is a wasteful number, since it uses less digits than its factorization.

361640012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90410007 (or 90410005 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 361640012 is about 19016.8349627376. The cubic root of 361640012 is about 712.4572742206.

Adding to 361640012 its reverse (210046163), we get a palindrome (571686175).

The spelling of 361640012 in words is "three hundred sixty-one million, six hundred forty thousand, twelve".