158437309397 has 2 divisors, whose sum is σ = 158437309398. Its totient is φ = 158437309396.

The previous prime is 158437309369. The next prime is 158437309447. The reversal of 158437309397 is 793903734851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156175926481 + 2261382916 = 395191^2 + 47554^2 .

It is a cyclic number.

It is not a de Polignac number, because 158437309397 - 2²⁰ = 158436260821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158437309697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79218654698 + 79218654699.

It is an arithmetic number, because the mean of its divisors is an integer number (79218654699).

Almost surely, 2^158437309397 is an apocalyptic number.

It is an amenable number.

158437309397 is a deficient number, since it is larger than the sum of its proper divisors (1).

158437309397 is an equidigital number, since it uses as much as digits as its factorization.

158437309397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17146080, while the sum is 59.

The spelling of 158437309397 in words is "one hundred fifty-eight billion, four hundred thirty-seven million, three hundred nine thousand, three hundred ninety-seven".