158803973 has 2 divisors, whose sum is σ = 158803974. Its totient is φ = 158803972.

The previous prime is 158803969. The next prime is 158803991. The reversal of 158803973 is 379308851.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144913444 + 13890529 = 12038^2 + 3727^2 .

It is a cyclic number.

It is not a de Polignac number, because 158803973 - 2² = 158803969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158803873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79401986 + 79401987.

It is an arithmetic number, because the mean of its divisors is an integer number (79401987).

Almost surely, 2^158803973 is an apocalyptic number.

It is an amenable number.

158803973 is a deficient number, since it is larger than the sum of its proper divisors (1).

158803973 is an equidigital number, since it uses as much as digits as its factorization.

158803973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 158803973 is about 12601.7448395054. The cubic root of 158803973 is about 541.5274233433.

The spelling of 158803973 in words is "one hundred fifty-eight million, eight hundred three thousand, nine hundred seventy-three".