158178011 has 2 divisors, whose sum is σ = 158178012. Its totient is φ = 158178010.

The previous prime is 158177963. The next prime is 158178029. The reversal of 158178011 is 110871851.

It is a strong prime.

It is an emirp because it is prime and its reverse (110871851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158178011 - 2¹⁰ = 158176987 is a prime.

It is a super-2 number, since 2×158178011² = 50040566327832242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158178091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79089005 + 79089006.

It is an arithmetic number, because the mean of its divisors is an integer number (79089006).

Almost surely, 2^158178011 is an apocalyptic number.

158178011 is a deficient number, since it is larger than the sum of its proper divisors (1).

158178011 is an equidigital number, since it uses as much as digits as its factorization.

158178011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 32.

The square root of 158178011 is about 12576.8839940583. The cubic root of 158178011 is about 540.8149685611.

The spelling of 158178011 in words is "one hundred fifty-eight million, one hundred seventy-eight thousand, eleven".