1667489484 has 12 divisors (see below), whose sum is σ = 3890808824. Its totient is φ = 555829824.

The previous prime is 1667489477. The next prime is 1667489491. The reversal of 1667489484 is 4849847661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1667489477) and next prime (1667489491).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69478717 + ... + 69478740.

Almost surely, 2^1667489484 is an apocalyptic number.

It is an amenable number.

1667489484 is an abundant number, since it is smaller than the sum of its proper divisors (2223319340).

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

1667489484 is a wasteful number, since it uses less digits than its factorization.

1667489484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138957464 (or 138957462 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 57.

The square root of 1667489484 is about 40834.9052160036. The cubic root of 1667489484 is about 1185.8261809615.

The spelling of 1667489484 in words is "one billion, six hundred sixty-seven million, four hundred eighty-nine thousand, four hundred eighty-four".