158728747 has 2 divisors, whose sum is σ = 158728748. Its totient is φ = 158728746.

The previous prime is 158728721. The next prime is 158728777. The reversal of 158728747 is 747827851.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158728747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158728747.

It is not a weakly prime, because it can be changed into another prime (158728777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79364373 + 79364374.

It is an arithmetic number, because the mean of its divisors is an integer number (79364374).

Almost surely, 2^158728747 is an apocalyptic number.

158728747 is a deficient number, since it is larger than the sum of its proper divisors (1).

158728747 is an equidigital number, since it uses as much as digits as its factorization.

158728747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 878080, while the sum is 49.

The square root of 158728747 is about 12598.7597405459. The cubic root of 158728747 is about 541.4419020236.

The spelling of 158728747 in words is "one hundred fifty-eight million, seven hundred twenty-eight thousand, seven hundred forty-seven".