1036639221 has 8 divisors (see below), whose sum is σ = 1454932320. Its totient is φ = 654719472.

The previous prime is 1036639217. The next prime is 1036639271. The reversal of 1036639221 is 1229366301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1036639221 - 2² = 1036639217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1036639271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9093270 + ... + 9093383.

It is an arithmetic number, because the mean of its divisors is an integer number (181866540).

Almost surely, 2^1036639221 is an apocalyptic number.

It is an amenable number.

1036639221 is a deficient number, since it is larger than the sum of its proper divisors (418293099).

1036639221 is a wasteful number, since it uses less digits than its factorization.

1036639221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18186675.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 1036639221 is about 32196.8821627188. The cubic root of 1036639221 is about 1012.0668784274.

The spelling of 1036639221 in words is "one billion, thirty-six million, six hundred thirty-nine thousand, two hundred twenty-one".