1533479948 has 144 divisors (see below), whose sum is σ = 3732520512. Its totient is φ = 536025600.

The previous prime is 1533479921. The next prime is 1533479953. The reversal of 1533479948 is 8499743351.

It is a self number, because there is not a number n which added to its sum of digits gives 1533479948.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1629158 + ... + 1630098.

Almost surely, 2^1533479948 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 1533479948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1866260256).

1533479948 is an abundant number, since it is smaller than the sum of its proper divisors (2199040564).

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

1533479948 is a wasteful number, since it uses less digits than its factorization.

1533479948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024 (or 1011 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 53.

The square root of 1533479948 is about 39159.6724705404. The cubic root of 1533479948 is about 1153.1683136400.

The spelling of 1533479948 in words is "one billion, five hundred thirty-three million, four hundred seventy-nine thousand, nine hundred forty-eight".