1538861132 has 12 divisors (see below), whose sum is σ = 2693741736. Its totient is φ = 769220640.

The previous prime is 1538861113. The next prime is 1538861141. The reversal of 1538861132 is 2311688351.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35369 + ... + 65792.

It is an arithmetic number, because the mean of its divisors is an integer number (224478478).

Almost surely, 2^1538861132 is an apocalyptic number.

It is an amenable number.

1538861132 is a deficient number, since it is larger than the sum of its proper divisors (1154880604).

1538861132 is a wasteful number, since it uses less digits than its factorization.

1538861132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104968 (or 104966 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 1538861132 is about 39228.3205350420. The cubic root of 1538861132 is about 1154.5156123050.

The spelling of 1538861132 in words is "one billion, five hundred thirty-eight million, eight hundred sixty-one thousand, one hundred thirty-two".