158961739 has 4 divisors (see below), whose sum is σ = 158993056. Its totient is φ = 158930424.

The previous prime is 158961701. The next prime is 158961827. The reversal of 158961739 is 937169851.

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

It is a cyclic number.

It is not a de Polignac number, because 158961739 - 2¹⁹ = 158437451 is a prime.

It is a super-3 number, since 3×158961739³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158961692 and 158961701.

It is not an unprimeable number, because it can be changed into a prime (158961839) 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, 6099 + ... + 18844.

It is an arithmetic number, because the mean of its divisors is an integer number (39748264).

Almost surely, 2^158961739 is an apocalyptic number.

158961739 is a deficient number, since it is larger than the sum of its proper divisors (31317).

158961739 is an equidigital number, since it uses as much as digits as its factorization.

158961739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31316.

The product of its digits is 408240, while the sum is 49.

The square root of 158961739 is about 12608.0029743017. The cubic root of 158961739 is about 541.7066932894.

The spelling of 158961739 in words is "one hundred fifty-eight million, nine hundred sixty-one thousand, seven hundred thirty-nine".