1538242147 has 8 divisors (see below), whose sum is σ = 1743756560. Its totient is φ = 1345183200.

The previous prime is 1538242087. The next prime is 1538242151. The reversal of 1538242147 is 7412428351.

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

It is a cyclic number.

It is not a de Polignac number, because 1538242147 - 2¹⁹ = 1537717859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1538249147) 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, 3113604 + ... + 3114097.

It is an arithmetic number, because the mean of its divisors is an integer number (217969570).

Almost surely, 2^1538242147 is an apocalyptic number.

1538242147 is a deficient number, since it is larger than the sum of its proper divisors (205514413).

1538242147 is a wasteful number, since it uses less digits than its factorization.

1538242147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6227733.

The product of its digits is 53760, while the sum is 37.

The square root of 1538242147 is about 39220.4302245654. The cubic root of 1538242147 is about 1154.3607957183.

The spelling of 1538242147 in words is "one billion, five hundred thirty-eight million, two hundred forty-two thousand, one hundred forty-seven".