1020998973 has 4 divisors (see below), whose sum is σ = 1361331968. Its totient is φ = 680665980.

The previous prime is 1020998947. The next prime is 1020998977. The reversal of 1020998973 is 3798990201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1020998973 - 2⁵ = 1020998941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020998977) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 170166493 + ... + 170166498.

It is an arithmetic number, because the mean of its divisors is an integer number (340332992).

Almost surely, 2^1020998973 is an apocalyptic number.

It is an amenable number.

1020998973 is a deficient number, since it is larger than the sum of its proper divisors (340332995).

1020998973 is an equidigital number, since it uses as much as digits as its factorization.

1020998973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340332994.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 1020998973 is about 31953.0745469039. The cubic root of 1020998973 is about 1006.9512261615.

The spelling of 1020998973 in words is "one billion, twenty million, nine hundred ninety-eight thousand, nine hundred seventy-three".