1538479554 has 8 divisors (see below), whose sum is σ = 3076959120. Its totient is φ = 512826516.

The previous prime is 1538479541. The next prime is 1538479559. The reversal of 1538479554 is 4559748351.

It is a sphenic number, since it is the product of 3 distinct primes.

1538479554 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1538479497 and 1538479506.

It is not an unprimeable number, because it can be changed into a prime (1538479559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128206624 + ... + 128206635.

It is an arithmetic number, because the mean of its divisors is an integer number (384619890).

Almost surely, 2^1538479554 is an apocalyptic number.

1538479554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1538479554 is a wasteful number, since it uses less digits than its factorization.

1538479554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256413264.

The product of its digits is 3024000, while the sum is 51.

The square root of 1538479554 is about 39223.4566809199. The cubic root of 1538479554 is about 1154.4201793544.

The spelling of 1538479554 in words is "one billion, five hundred thirty-eight million, four hundred seventy-nine thousand, five hundred fifty-four".