1897945067 has 2 divisors, whose sum is σ = 1897945068. Its totient is φ = 1897945066.

The previous prime is 1897945039. The next prime is 1897945079. The reversal of 1897945067 is 7605497981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1897945067 - 2¹⁰ = 1897944043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1897945037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 948972533 + 948972534.

It is an arithmetic number, because the mean of its divisors is an integer number (948972534).

Almost surely, 2^1897945067 is an apocalyptic number.

1897945067 is a deficient number, since it is larger than the sum of its proper divisors (1).

1897945067 is an equidigital number, since it uses as much as digits as its factorization.

1897945067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 56.

The square root of 1897945067 is about 43565.4113603900. The cubic root of 1897945067 is about 1238.1156488015.

It can be divided in two parts, 18979 and 45067, that added together give a palindrome (64046).

The spelling of 1897945067 in words is "one billion, eight hundred ninety-seven million, nine hundred forty-five thousand, sixty-seven".