158155787 has 2 divisors, whose sum is σ = 158155788. Its totient is φ = 158155786.

The previous prime is 158155771. The next prime is 158155793. The reversal of 158155787 is 787551851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158155787 - 2⁴ = 158155771 is a prime.

It is not a weakly prime, because it can be changed into another prime (158155717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79077893 + 79077894.

It is an arithmetic number, because the mean of its divisors is an integer number (79077894).

Almost surely, 2^158155787 is an apocalyptic number.

158155787 is a deficient number, since it is larger than the sum of its proper divisors (1).

158155787 is an equidigital number, since it uses as much as digits as its factorization.

158155787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 392000, while the sum is 47.

The square root of 158155787 is about 12576.0004373410. Note that the first 3 decimals coincide. The cubic root of 158155787 is about 540.7896392191.

The spelling of 158155787 in words is "one hundred fifty-eight million, one hundred fifty-five thousand, seven hundred eighty-seven".