1538229907 has 2 divisors, whose sum is σ = 1538229908. Its totient is φ = 1538229906.

The previous prime is 1538229893. The next prime is 1538229941. The reversal of 1538229907 is 7099228351.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1538229907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1538229307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769114953 + 769114954.

It is an arithmetic number, because the mean of its divisors is an integer number (769114954).

Almost surely, 2^1538229907 is an apocalyptic number.

1538229907 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538229907 is an equidigital number, since it uses as much as digits as its factorization.

1538229907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 1538229907 is about 39220.2741831314. The cubic root of 1538229907 is about 1154.3577339087.

The spelling of 1538229907 in words is "one billion, five hundred thirty-eight million, two hundred twenty-nine thousand, nine hundred seven".