1538813424 has 80 divisors (see below), whose sum is σ = 4099157280. Its totient is φ = 497064960.

The previous prime is 1538813369. The next prime is 1538813431. The reversal of 1538813424 is 4243188351.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476134 + ... + 479354.

It is an arithmetic number, because the mean of its divisors is an integer number (51239466).

Almost surely, 2^1538813424 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 1538813424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2049578640).

1538813424 is an abundant number, since it is smaller than the sum of its proper divisors (2560343856).

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

1538813424 is a wasteful number, since it uses less digits than its factorization.

1538813424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3538 (or 3532 counting only the distinct ones).

The product of its digits is 92160, while the sum is 39.

The square root of 1538813424 is about 39227.7124492367. The cubic root of 1538813424 is about 1154.5036813606.

The spelling of 1538813424 in words is "one billion, five hundred thirty-eight million, eight hundred thirteen thousand, four hundred twenty-four".