1897381301 has 2 divisors, whose sum is σ = 1897381302. Its totient is φ = 1897381300.

The previous prime is 1897381259. The next prime is 1897381303. The reversal of 1897381301 is 1031837981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1459316401 + 438064900 = 38201^2 + 20930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1897381301 is a prime.

Together with 1897381303, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1897381303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 948690650 + 948690651.

It is an arithmetic number, because the mean of its divisors is an integer number (948690651).

Almost surely, 2^1897381301 is an apocalyptic number.

It is an amenable number.

1897381301 is a deficient number, since it is larger than the sum of its proper divisors (1).

1897381301 is an equidigital number, since it uses as much as digits as its factorization.

1897381301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 1897381301 is about 43558.9405403759. The cubic root of 1897381301 is about 1237.9930466176.

The spelling of 1897381301 in words is "one billion, eight hundred ninety-seven million, three hundred eighty-one thousand, three hundred one".