1012643552 has 12 divisors (see below), whose sum is σ = 1993642056. Its totient is φ = 506321760.

The previous prime is 1012643521. The next prime is 1012643557. The reversal of 1012643552 is 2553462101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012643557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15822524 + ... + 15822587.

It is an arithmetic number, because the mean of its divisors is an integer number (166136838).

Almost surely, 2^1012643552 is an apocalyptic number.

It is an amenable number.

1012643552 is a deficient number, since it is larger than the sum of its proper divisors (980998504).

1012643552 is an equidigital number, since it uses as much as digits as its factorization.

1012643552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31645121 (or 31645113 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1012643552 is about 31822.0607755060. The cubic root of 1012643552 is about 1004.1968788998.

The spelling of 1012643552 in words is "one billion, twelve million, six hundred forty-three thousand, five hundred fifty-two".