1989000107 has 2 divisors, whose sum is σ = 1989000108. Its totient is φ = 1989000106.

The previous prime is 1989000103. The next prime is 1989000137. The reversal of 1989000107 is 7010009891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1989000107 - 2² = 1989000103 is a prime.

It is a super-2 number, since 2×1989000107² = 7912242851292022898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1989000103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994500053 + 994500054.

It is an arithmetic number, because the mean of its divisors is an integer number (994500054).

Almost surely, 2^1989000107 is an apocalyptic number.

1989000107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1989000107 is an equidigital number, since it uses as much as digits as its factorization.

1989000107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 1989000107 is about 44598.2074415553. The cubic root of 1989000107 is about 1257.6069694663.

Adding to 1989000107 its reverse (7010009891), we get a palindrome (8999009998).

The spelling of 1989000107 in words is "one billion, nine hundred eighty-nine million, one hundred seven", and thus it is an aban number.