1997049583 has 2 divisors, whose sum is σ = 1997049584. Its totient is φ = 1997049582.

The previous prime is 1997049569. The next prime is 1997049601. The reversal of 1997049583 is 3859407991.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1997049583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1997049553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998524791 + 998524792.

It is an arithmetic number, because the mean of its divisors is an integer number (998524792).

Almost surely, 2^1997049583 is an apocalyptic number.

1997049583 is a deficient number, since it is larger than the sum of its proper divisors (1).

1997049583 is an equidigital number, since it uses as much as digits as its factorization.

1997049583 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The square root of 1997049583 is about 44688.3607105922. The cubic root of 1997049583 is about 1259.3011962430.

The spelling of 1997049583 in words is "one billion, nine hundred ninety-seven million, forty-nine thousand, five hundred eighty-three".