158403641 has 16 divisors (see below), whose sum is σ = 177179136. Its totient is φ = 141570000.

The previous prime is 158403631. The next prime is 158403643. The reversal of 158403641 is 146304851.

It is not a de Polignac number, because 158403641 - 2⁶ = 158403577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 158403598 and 158403607.

It is not an unprimeable number, because it can be changed into a prime (158403643) 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, 80216 + ... + 82166.

It is an arithmetic number, because the mean of its divisors is an integer number (11073696).

Almost surely, 2^158403641 is an apocalyptic number.

158403641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

158403641 is a deficient number, since it is larger than the sum of its proper divisors (18775495).

158403641 is an equidigital number, since it uses as much as digits as its factorization.

158403641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045 (or 2023 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 158403641 is about 12585.8508254309. The cubic root of 158403641 is about 541.0719914492.

The spelling of 158403641 in words is "one hundred fifty-eight million, four hundred three thousand, six hundred forty-one".