1889206097 has 2 divisors, whose sum is σ = 1889206098. Its totient is φ = 1889206096.

The previous prime is 1889206087. The next prime is 1889206103. The reversal of 1889206097 is 7906029881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1705359616 + 183846481 = 41296^2 + 13559^2 .

It is an emirp because it is prime and its reverse (7906029881) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1889206097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1889206027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944603048 + 944603049.

It is an arithmetic number, because the mean of its divisors is an integer number (944603049).

Almost surely, 2^1889206097 is an apocalyptic number.

It is an amenable number.

1889206097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1889206097 is an equidigital number, since it uses as much as digits as its factorization.

1889206097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 1889206097 is about 43464.9985275509. The cubic root of 1889206097 is about 1236.2124492550.

The spelling of 1889206097 in words is "one billion, eight hundred eighty-nine million, two hundred six thousand, ninety-seven".