1020985197 has 8 divisors (see below), whose sum is σ = 1432961760. Its totient is φ = 644832720.

The previous prime is 1020985193. The next prime is 1020985211. The reversal of 1020985197 is 7915890201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020985197 - 2² = 1020985193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020985193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8955954 + ... + 8956067.

It is an arithmetic number, because the mean of its divisors is an integer number (179120220).

Almost surely, 2^1020985197 is an apocalyptic number.

It is an amenable number.

1020985197 is a deficient number, since it is larger than the sum of its proper divisors (411976563).

1020985197 is a wasteful number, since it uses less digits than its factorization.

1020985197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17912043.

The product of its (nonzero) digits is 45360, while the sum is 42.

The square root of 1020985197 is about 31952.8589800662. The cubic root of 1020985197 is about 1006.9466973216.

The spelling of 1020985197 in words is "one billion, twenty million, nine hundred eighty-five thousand, one hundred ninety-seven".