1106821636 has 6 divisors (see below), whose sum is σ = 1936937870. Its totient is φ = 553410816.

The previous prime is 1106821607. The next prime is 1106821673. The reversal of 1106821636 is 6361286011.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1011876100 + 94945536 = 31810^2 + 9744^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138352701 + ... + 138352708.

Almost surely, 2^1106821636 is an apocalyptic number.

It is an amenable number.

1106821636 is a deficient number, since it is larger than the sum of its proper divisors (830116234).

1106821636 is a wasteful number, since it uses less digits than its factorization.

1106821636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276705413 (or 276705411 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1106821636 is about 33268.9289878710. The cubic root of 1106821636 is about 1034.4096101586.

The spelling of 1106821636 in words is "one billion, one hundred six million, eight hundred twenty-one thousand, six hundred thirty-six".