1011140644 has 6 divisors (see below), whose sum is σ = 1769496134. Its totient is φ = 505570320.

The previous prime is 1011140639. The next prime is 1011140653. The reversal of 1011140644 is 4460411101.

It can be written as a sum of positive squares in only one way, i.e., 834516544 + 176624100 = 28888^2 + 13290^2 .

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, 126392577 + ... + 126392584.

Almost surely, 2^1011140644 is an apocalyptic number.

It is an amenable number.

1011140644 is a deficient number, since it is larger than the sum of its proper divisors (758355490).

1011140644 is a wasteful number, since it uses less digits than its factorization.

1011140644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252785165 (or 252785163 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1011140644 is about 31798.4377603680. The cubic root of 1011140644 is about 1003.6998422849.

Adding to 1011140644 its reverse (4460411101), we get a palindrome (5471551745).

The spelling of 1011140644 in words is "one billion, eleven million, one hundred forty thousand, six hundred forty-four".