1974007897 has 2 divisors, whose sum is σ = 1974007898. Its totient is φ = 1974007896.

The previous prime is 1974007891. The next prime is 1974007927. The reversal of 1974007897 is 7987004791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1456490896 + 517517001 = 38164^2 + 22749^2 .

It is a cyclic number.

It is not a de Polignac number, because 1974007897 - 2¹⁹ = 1973483609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1974007891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 987003948 + 987003949.

It is an arithmetic number, because the mean of its divisors is an integer number (987003949).

Almost surely, 2^1974007897 is an apocalyptic number.

It is an amenable number.

1974007897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1974007897 is an equidigital number, since it uses as much as digits as its factorization.

1974007897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 889056, while the sum is 52.

The square root of 1974007897 is about 44429.8086536505. The cubic root of 1974007897 is about 1254.4392339253.

The spelling of 1974007897 in words is "one billion, nine hundred seventy-four million, seven thousand, eight hundred ninety-seven".