169081357 has 4 divisors (see below), whose sum is σ = 169939836. Its totient is φ = 168222880.

The previous prime is 169081333. The next prime is 169081369. The reversal of 169081357 is 753180961.

169081357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 163098441 + 5982916 = 12771^2 + 2446^2 .

It is a cyclic number.

It is not a de Polignac number, because 169081357 - 2⁷ = 169081229 is a prime.

It is a super-2 number, since 2×169081357² = 57177010569922898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169081387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428944 + ... + 429337.

It is an arithmetic number, because the mean of its divisors is an integer number (42484959).

Almost surely, 2^169081357 is an apocalyptic number.

It is an amenable number.

169081357 is a deficient number, since it is larger than the sum of its proper divisors (858479).

169081357 is an equidigital number, since it uses as much as digits as its factorization.

169081357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858478.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 169081357 is about 13003.1287388843. The cubic root of 169081357 is about 552.9661859779.

The spelling of 169081357 in words is "one hundred sixty-nine million, eighty-one thousand, three hundred fifty-seven".