1989466452 has 36 divisors (see below), whose sum is σ = 5151589716. Its totient is φ = 646980480.

The previous prime is 1989466433. The next prime is 1989466469. The reversal of 1989466452 is 2546649891.

It can be written as a sum of positive squares in 2 ways, for example, as 356983236 + 1632483216 = 18894^2 + 40404^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 672463 + ... + 675414.

Almost surely, 2^1989466452 is an apocalyptic number.

1989466452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1989466452 is an abundant number, since it is smaller than the sum of its proper divisors (3162123264).

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

1989466452 is a wasteful number, since it uses less digits than its factorization.

1989466452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347928 (or 1347923 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 1989466452 is about 44603.4354282268. The cubic root of 1989466452 is about 1257.7052488129.

The spelling of 1989466452 in words is "one billion, nine hundred eighty-nine million, four hundred sixty-six thousand, four hundred fifty-two".