1538439038 has 32 divisors (see below), whose sum is σ = 2544644160. Its totient is φ = 694310400.

The previous prime is 1538439029. The next prime is 1538439061. The reversal of 1538439038 is 8309348351.

It is a self number, because there is not a number n which added to its sum of digits gives 1538439038.

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, 143720 + ... + 154052.

It is an arithmetic number, because the mean of its divisors is an integer number (79520130).

Almost surely, 2^1538439038 is an apocalyptic number.

1538439038 is a deficient number, since it is larger than the sum of its proper divisors (1006205122).

1538439038 is a wasteful number, since it uses less digits than its factorization.

1538439038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10532.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 1538439038 is about 39222.9402008569. The cubic root of 1538439038 is about 1154.4100453450.

The spelling of 1538439038 in words is "one billion, five hundred thirty-eight million, four hundred thirty-nine thousand, thirty-eight".