158644473 has 16 divisors (see below), whose sum is σ = 228419520. Its totient is φ = 97360704.

The previous prime is 158644439. The next prime is 158644481. The reversal of 158644473 is 374446851.

It is not a de Polignac number, because 158644473 - 2¹⁰ = 158643449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158644483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9415 + ... + 20147.

It is an arithmetic number, because the mean of its divisors is an integer number (14276220).

Almost surely, 2^158644473 is an apocalyptic number.

158644473 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

158644473 is a deficient number, since it is larger than the sum of its proper divisors (69775047).

158644473 is a wasteful number, since it uses less digits than its factorization.

158644473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11128.

The product of its digits is 322560, while the sum is 42.

The square root of 158644473 is about 12595.4147609358. The cubic root of 158644473 is about 541.3460623107.

The spelling of 158644473 in words is "one hundred fifty-eight million, six hundred forty-four thousand, four hundred seventy-three".