165142363 has 4 divisors (see below), whose sum is σ = 170469568. Its totient is φ = 159815160.

The previous prime is 165142331. The next prime is 165142387. The reversal of 165142363 is 363241561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 363241561 = 499 ⋅727939.

It is a cyclic number.

It is not a de Polignac number, because 165142363 - 2⁵ = 165142331 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 5327173 = 165142363 / (1 + 6 + 5 + 1 + 4 + 2 + 3 + 6 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165142763) 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, 2663556 + ... + 2663617.

It is an arithmetic number, because the mean of its divisors is an integer number (42617392).

Almost surely, 2^165142363 is an apocalyptic number.

165142363 is a deficient number, since it is larger than the sum of its proper divisors (5327205).

165142363 is an equidigital number, since it uses as much as digits as its factorization.

165142363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5327204.

The product of its digits is 12960, while the sum is 31.

The square root of 165142363 is about 12850.7728561359. The cubic root of 165142363 is about 548.6383540420.

The spelling of 165142363 in words is "one hundred sixty-five million, one hundred forty-two thousand, three hundred sixty-three".