1997635846 has 16 divisors (see below), whose sum is σ = 3176714880. Its totient is φ = 940472640.

The previous prime is 1997635841. The next prime is 1997635897. The reversal of 1997635846 is 6485367991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997635841) 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, 433111 + ... + 437698.

It is an arithmetic number, because the mean of its divisors is an integer number (198544680).

Almost surely, 2^1997635846 is an apocalyptic number.

1997635846 is a deficient number, since it is larger than the sum of its proper divisors (1179079034).

1997635846 is a wasteful number, since it uses less digits than its factorization.

1997635846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870879.

The product of its digits is 9797760, while the sum is 58.

The square root of 1997635846 is about 44694.9196889311. The cubic root of 1997635846 is about 1259.4244129241.

The spelling of 1997635846 in words is "one billion, nine hundred ninety-seven million, six hundred thirty-five thousand, eight hundred forty-six".