162599945 has 4 divisors (see below), whose sum is σ = 195119940. Its totient is φ = 130079952.

The previous prime is 162599923. The next prime is 162599947. The reversal of 162599945 is 549995261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549995261 = 19 ⋅28947119.

It can be written as a sum of positive squares in 2 ways, for example, as 45873529 + 116726416 = 6773^2 + 10804^2 .

It is a cyclic number.

It is not a de Polignac number, because 162599945 - 2¹⁶ = 162534409 is a prime.

It is a super-2 number, since 2×162599945² = 52877484228006050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 162599893 and 162599902.

It is not an unprimeable number, because it can be changed into a prime (162599947) 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, 16259990 + ... + 16259999.

It is an arithmetic number, because the mean of its divisors is an integer number (48779985).

Almost surely, 2^162599945 is an apocalyptic number.

It is an amenable number.

162599945 is a deficient number, since it is larger than the sum of its proper divisors (32519995).

162599945 is an equidigital number, since it uses as much as digits as its factorization.

162599945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32519994.

The product of its digits is 874800, while the sum is 50.

The square root of 162599945 is about 12751.4683468219. The cubic root of 162599945 is about 545.8082947679.

The spelling of 162599945 in words is "one hundred sixty-two million, five hundred ninety-nine thousand, nine hundred forty-five".