1021646632 has 16 divisors (see below), whose sum is σ = 1960136640. Its totient is φ = 498943536.

The previous prime is 1021646629. The next prime is 1021646641. The reversal of 1021646632 is 2366461201.

1021646632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1021646594 and 1021646603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1484608 + ... + 1485295.

It is an arithmetic number, because the mean of its divisors is an integer number (122508540).

Almost surely, 2^1021646632 is an apocalyptic number.

It is an amenable number.

1021646632 is a deficient number, since it is larger than the sum of its proper divisors (938490008).

1021646632 is a wasteful number, since it uses less digits than its factorization.

1021646632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969952 (or 2969948 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 1021646632 is about 31963.2074735938. The cubic root of 1021646632 is about 1007.1640971480.

The spelling of 1021646632 in words is "one billion, twenty-one million, six hundred forty-six thousand, six hundred thirty-two".