158440965 has 8 divisors (see below), whose sum is σ = 253505568. Its totient is φ = 84501840.

The previous prime is 158440927. The next prime is 158440979. The reversal of 158440965 is 569044851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 158440965 - 2⁷ = 158440837 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5281351 + ... + 5281380.

It is an arithmetic number, because the mean of its divisors is an integer number (31688196).

Almost surely, 2^158440965 is an apocalyptic number.

158440965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

158440965 is a deficient number, since it is larger than the sum of its proper divisors (95064603).

158440965 is a wasteful number, since it uses less digits than its factorization.

158440965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10562739.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 158440965 is about 12587.3335142913. Note that the first 3 decimals coincide. The cubic root of 158440965 is about 541.1144849696.

The spelling of 158440965 in words is "one hundred fifty-eight million, four hundred forty thousand, nine hundred sixty-five".