1989000104 has 64 divisors (see below), whose sum is σ = 4831612800. Its totient is φ = 745438464.

The previous prime is 1989000103. The next prime is 1989000107. The reversal of 1989000104 is 4010009891.

It is a super-2 number, since 2×1989000104² = 7912242827424021632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1989000103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58067 + ... + 85730.

It is an arithmetic number, because the mean of its divisors is an integer number (75493950).

Almost surely, 2^1989000104 is an apocalyptic number.

1989000104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1989000104 is an abundant number, since it is smaller than the sum of its proper divisors (2842612696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1989000104 is a wasteful number, since it uses less digits than its factorization.

1989000104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143842 (or 143838 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1989000104 is about 44598.2074079217. The cubic root of 1989000104 is about 1257.6069688341.

Adding to 1989000104 its reverse (4010009891), we get a palindrome (5999009995).

The spelling of 1989000104 in words is "one billion, nine hundred eighty-nine million, one hundred four", and thus it is an aban number.