1553938484 has 48 divisors (see below), whose sum is σ = 3300528000. Its totient is φ = 625314816.

The previous prime is 1553938483. The next prime is 1553938493. The reversal of 1553938484 is 4848393551.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553938483) 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, 47192 + ... + 73040.

It is an arithmetic number, because the mean of its divisors is an integer number (68761000).

Almost surely, 2^1553938484 is an apocalyptic number.

1553938484 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1553938484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1650264000).

1553938484 is an abundant number, since it is smaller than the sum of its proper divisors (1746589516).

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

1553938484 is a wasteful number, since it uses less digits than its factorization.

1553938484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25992 (or 25990 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 50.

The square root of 1553938484 is about 39420.0264332737. The cubic root of 1553938484 is about 1158.2739102457.

The spelling of 1553938484 in words is "one billion, five hundred fifty-three million, nine hundred thirty-eight thousand, four hundred eighty-four".