1538474658 has 48 divisors (see below), whose sum is σ = 3585675744. Its totient is φ = 438782400.

The previous prime is 1538474633. The next prime is 1538474659. The reversal of 1538474658 is 8564748351.

It is a self number, because there is not a number n which added to its sum of digits gives 1538474658.

It is not an unprimeable number, because it can be changed into a prime (1538474659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172341 + ... + 181047.

It is an arithmetic number, because the mean of its divisors is an integer number (74701578).

Almost surely, 2^1538474658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1538474658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1792837872).

1538474658 is an abundant number, since it is smaller than the sum of its proper divisors (2047201086).

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

1538474658 is a wasteful number, since it uses less digits than its factorization.

1538474658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9327 (or 9320 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 51.

The square root of 1538474658 is about 39223.3942692368. The cubic root of 1538474658 is about 1154.4189547585.

The spelling of 1538474658 in words is "one billion, five hundred thirty-eight million, four hundred seventy-four thousand, six hundred fifty-eight".