1997002849 has 2 divisors, whose sum is σ = 1997002850. Its totient is φ = 1997002848.

The previous prime is 1997002817. The next prime is 1997002859. The reversal of 1997002849 is 9482007991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1361610000 + 635392849 = 36900^2 + 25207^2 .

It is a cyclic number.

It is not a de Polignac number, because 1997002849 - 2⁵ = 1997002817 is a prime.

It is a super-3 number, since 3×1997002849³ (a number of 29 digits) contains 333 as substring.

1997002849 is a modest number, since divided by 2849 gives 1997 as remainder.

It is not a weakly prime, because it can be changed into another prime (1997002859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998501424 + 998501425.

It is an arithmetic number, because the mean of its divisors is an integer number (998501425).

Almost surely, 2^1997002849 is an apocalyptic number.

It is an amenable number.

1997002849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1997002849 is an equidigital number, since it uses as much as digits as its factorization.

1997002849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 1997002849 is about 44687.8378197021. The cubic root of 1997002849 is about 1259.2913729781.

The spelling of 1997002849 in words is "one billion, nine hundred ninety-seven million, two thousand, eight hundred forty-nine".