1989314148 has 12 divisors (see below), whose sum is σ = 4641733040. Its totient is φ = 663104712.

The previous prime is 1989314123. The next prime is 1989314149. The reversal of 1989314148 is 8414139891.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1989314097 and 1989314106.

It is not an unprimeable number, because it can be changed into a prime (1989314149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82888078 + ... + 82888101.

Almost surely, 2^1989314148 is an apocalyptic number.

It is an amenable number.

1989314148 is an abundant number, since it is smaller than the sum of its proper divisors (2652418892).

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

1989314148 is a wasteful number, since it uses less digits than its factorization.

1989314148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165776186 (or 165776184 counting only the distinct ones).

The product of its digits is 248832, while the sum is 48.

The square root of 1989314148 is about 44601.7280831136. The cubic root of 1989314148 is about 1257.6731533687.

The spelling of 1989314148 in words is "one billion, nine hundred eighty-nine million, three hundred fourteen thousand, one hundred forty-eight".