158401013 has 4 divisors (see below), whose sum is σ = 158694348. Its totient is φ = 158107680.

The previous prime is 158401007. The next prime is 158401037. The reversal of 158401013 is 310104851.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20268004 + 138133009 = 4502^2 + 11753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158401013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 158401013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158401073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145856 + ... + 146937.

It is an arithmetic number, because the mean of its divisors is an integer number (39673587).

Almost surely, 2^158401013 is an apocalyptic number.

It is an amenable number.

158401013 is a deficient number, since it is larger than the sum of its proper divisors (293335).

158401013 is an equidigital number, since it uses as much as digits as its factorization.

158401013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293334.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 158401013 is about 12585.7464220443. The cubic root of 158401013 is about 541.0689992093.

Adding to 158401013 its reverse (310104851), we get a palindrome (468505864).

The spelling of 158401013 in words is "one hundred fifty-eight million, four hundred one thousand, thirteen".