1889064839 has 2 divisors, whose sum is σ = 1889064840. Its totient is φ = 1889064838.

The previous prime is 1889064817. The next prime is 1889064857. The reversal of 1889064839 is 9384609881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1889064839 - 2¹² = 1889060743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1889067839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944532419 + 944532420.

It is an arithmetic number, because the mean of its divisors is an integer number (944532420).

Almost surely, 2^1889064839 is an apocalyptic number.

1889064839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1889064839 is an equidigital number, since it uses as much as digits as its factorization.

1889064839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 56.

The square root of 1889064839 is about 43463.3735345060. The cubic root of 1889064839 is about 1236.1816375027.

The spelling of 1889064839 in words is "one billion, eight hundred eighty-nine million, sixty-four thousand, eight hundred thirty-nine".