162640841 has 4 divisors (see below), whose sum is σ = 177426384. Its totient is φ = 147855300.

The previous prime is 162640837. The next prime is 162640859. The reversal of 162640841 is 148046261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 162640841 - 2² = 162640837 is a prime.

It is a super-2 number, since 2×162640841² = 52904086322374562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 162640798 and 162640807.

It is not an unprimeable number, because it can be changed into a prime (162640831) 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, 7392755 + ... + 7392776.

It is an arithmetic number, because the mean of its divisors is an integer number (44356596).

Almost surely, 2^162640841 is an apocalyptic number.

162640841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

162640841 is a deficient number, since it is larger than the sum of its proper divisors (14785543).

162640841 is a wasteful number, since it uses less digits than its factorization.

162640841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14785542.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 162640841 is about 12753.0718260347. The cubic root of 162640841 is about 545.8540502260.

The spelling of 162640841 in words is "one hundred sixty-two million, six hundred forty thousand, eight hundred forty-one".