158081974 has 4 divisors (see below), whose sum is σ = 237122964. Its totient is φ = 79040986.

The previous prime is 158081969. The next prime is 158081977. The reversal of 158081974 is 479180851.

It is a happy number.

158081974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 479180851 = 67 ⋅7151953.

It is a self number, because there is not a number n which added to its sum of digits gives 158081974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158081977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39520492 + ... + 39520495.

It is an arithmetic number, because the mean of its divisors is an integer number (59280741).

Almost surely, 2^158081974 is an apocalyptic number.

158081974 is a deficient number, since it is larger than the sum of its proper divisors (79040990).

158081974 is an equidigital number, since it uses as much as digits as its factorization.

158081974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79040989.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 158081974 is about 12573.0654177889. The cubic root of 158081974 is about 540.7054953549.

The spelling of 158081974 in words is "one hundred fifty-eight million, eighty-one thousand, nine hundred seventy-four".