1623998484 has 60 divisors (see below), whose sum is σ = 4283119764. Its totient is φ = 536530176.

The previous prime is 1623998477. The next prime is 1623998489. The reversal of 1623998484 is 4848993261.

1623998484 is a `hidden beast` number, since 1 + 623 + 9 + 9 + 8 + 4 + 8 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 719312400 + 904686084 = 26820^2 + 30078^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1623998484.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623998489) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14434 + ... + 58790.

Almost surely, 2^1623998484 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1623998484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2141559882).

1623998484 is an abundant number, since it is smaller than the sum of its proper divisors (2659121280).

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

1623998484 is a wasteful number, since it uses less digits than its factorization.

1623998484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44486 (or 44475 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 1623998484 is about 40298.8645497612. The cubic root of 1623998484 is about 1175.4257660896.

The spelling of 1623998484 in words is "one billion, six hundred twenty-three million, nine hundred ninety-eight thousand, four hundred eighty-four".