4446155642 has 4 divisors (see below), whose sum is σ = 6669233466. Its totient is φ = 2223077820.

The previous prime is 4446155641. The next prime is 4446155717. The reversal of 4446155642 is 2465516444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3319949161 + 1126206481 = 57619^2 + 33559^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4446155642.

It is not an unprimeable number, because it can be changed into a prime (4446155641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111538909 + ... + 1111538912.

Almost surely, 2^4446155642 is an apocalyptic number.

4446155642 is a deficient number, since it is larger than the sum of its proper divisors (2223077824).

4446155642 is a wasteful number, since it uses less digits than its factorization.

4446155642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223077823.

The product of its digits is 460800, while the sum is 41.

The square root of 4446155642 is about 66679.4994132379. The cubic root of 4446155642 is about 1644.3523646156.

The spelling of 4446155642 in words is "four billion, four hundred forty-six million, one hundred fifty-five thousand, six hundred forty-two".