1012644788 has 6 divisors (see below), whose sum is σ = 1772128386. Its totient is φ = 506322392.

The previous prime is 1012644769. The next prime is 1012644793. The reversal of 1012644788 is 8874462101.

It can be written as a sum of positive squares in only one way, i.e., 960256144 + 52388644 = 30988^2 + 7238^2 .

It is a super-3 number, since 3×1012644788³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126580595 + ... + 126580602.

It is an arithmetic number, because the mean of its divisors is an integer number (295354731).

Almost surely, 2^1012644788 is an apocalyptic number.

It is an amenable number.

1012644788 is a deficient number, since it is larger than the sum of its proper divisors (759483598).

1012644788 is a wasteful number, since it uses less digits than its factorization.

1012644788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253161201 (or 253161199 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 1012644788 is about 31822.0801959897. The cubic root of 1012644788 is about 1004.1972874631.

The spelling of 1012644788 in words is "one billion, twelve million, six hundred forty-four thousand, seven hundred eighty-eight".