1538089044 has 24 divisors (see below), whose sum is σ = 3656590560. Its totient is φ = 503022624.

The previous prime is 1538089043. The next prime is 1538089057. The reversal of 1538089044 is 4409808351.

It is a junction number, because it is equal to n+sod(n) for n = 1538088987 and 1538089005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538089043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1208554 + ... + 1209825.

It is an arithmetic number, because the mean of its divisors is an integer number (152357940).

Almost surely, 2^1538089044 is an apocalyptic number.

It is an amenable number.

1538089044 is an abundant number, since it is smaller than the sum of its proper divisors (2118501516).

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

1538089044 is a wasteful number, since it uses less digits than its factorization.

1538089044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418439 (or 2418437 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 1538089044 is about 39218.4783488600. The cubic root of 1538089044 is about 1154.3224961642.

The spelling of 1538089044 in words is "one billion, five hundred thirty-eight million, eighty-nine thousand, forty-four".