1020731364 has 18 divisors (see below), whose sum is σ = 2580182150. Its totient is φ = 340243776.

The previous prime is 1020731359. The next prime is 1020731401. The reversal of 1020731364 is 4631370201.

It can be written as a sum of positive squares in only one way, i.e., 879596964 + 141134400 = 29658^2 + 11880^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 in 5 ways as a sum of consecutive naturals, for example, 14176789 + ... + 14176860.

Almost surely, 2^1020731364 is an apocalyptic number.

It is an amenable number.

1020731364 is an abundant number, since it is smaller than the sum of its proper divisors (1559450786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020731364 is a wasteful number, since it uses less digits than its factorization.

1020731364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28353659 (or 28353654 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1020731364 is about 31948.8867411683. The cubic root of 1020731364 is about 1006.8632428026.

The spelling of 1020731364 in words is "one billion, twenty million, seven hundred thirty-one thousand, three hundred sixty-four".