1989068087 has 2 divisors, whose sum is σ = 1989068088. Its totient is φ = 1989068086.

The previous prime is 1989068063. The next prime is 1989068117. The reversal of 1989068087 is 7808609891.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1989068087 - 2¹⁰ = 1989067063 is a prime.

It is a super-3 number, since 3×1989068087³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1989068057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994534043 + 994534044.

It is an arithmetic number, because the mean of its divisors is an integer number (994534044).

Almost surely, 2^1989068087 is an apocalyptic number.

1989068087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1989068087 is an equidigital number, since it uses as much as digits as its factorization.

1989068087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 56.

The square root of 1989068087 is about 44598.9695732984. The cubic root of 1989068087 is about 1257.6212967905.

The spelling of 1989068087 in words is "one billion, nine hundred eighty-nine million, sixty-eight thousand, eighty-seven".