1012021984 has 24 divisors (see below), whose sum is σ = 1993139568. Its totient is φ = 505827840.

The previous prime is 1012021973. The next prime is 1012021987. The reversal of 1012021984 is 4891202101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012021987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145629 + ... + 152419.

It is an arithmetic number, because the mean of its divisors is an integer number (83047482).

Almost surely, 2^1012021984 is an apocalyptic number.

It is an amenable number.

1012021984 is a deficient number, since it is larger than the sum of its proper divisors (981117584).

1012021984 is an equidigital number, since it uses as much as digits as its factorization.

1012021984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11458 (or 11450 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 1012021984 is about 31812.2929698568. The cubic root of 1012021984 is about 1003.9913757242.

The spelling of 1012021984 in words is "one billion, twelve million, twenty-one thousand, nine hundred eighty-four".