361628642 has 4 divisors (see below), whose sum is σ = 542442966. Its totient is φ = 180814320.

The previous prime is 361628629. The next prime is 361628677. The reversal of 361628642 is 246826163.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246826163 = 29 ⋅8511247.

It can be written as a sum of positive squares in only one way, i.e., 201327721 + 160300921 = 14189^2 + 12661^2 .

It is a junction number, because it is equal to n+sod(n) for n = 361628596 and 361628605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90407159 + ... + 90407162.

Almost surely, 2^361628642 is an apocalyptic number.

361628642 is a deficient number, since it is larger than the sum of its proper divisors (180814324).

361628642 is a wasteful number, since it uses less digits than its factorization.

361628642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180814323.

The product of its digits is 82944, while the sum is 38.

The square root of 361628642 is about 19016.5360147425. The cubic root of 361628642 is about 712.4498075651.

The spelling of 361628642 in words is "three hundred sixty-one million, six hundred twenty-eight thousand, six hundred forty-two".