162993949 has 4 divisors (see below), whose sum is σ = 168614460. Its totient is φ = 157373440.

The previous prime is 162993899. The next prime is 162993953. The reversal of 162993949 is 949399261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 949399261 = 173 ⋅5487857.

It can be written as a sum of positive squares in 2 ways, for example, as 58033924 + 104960025 = 7618^2 + 10245^2 .

It is a cyclic number.

It is not a de Polignac number, because 162993949 - 2⁹ = 162993437 is a prime.

It is a super-2 number, since 2×162993949² = 53134054821229202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 162993896 and 162993905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162993449) 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, 2810212 + ... + 2810269.

It is an arithmetic number, because the mean of its divisors is an integer number (42153615).

Almost surely, 2^162993949 is an apocalyptic number.

It is an amenable number.

162993949 is a deficient number, since it is larger than the sum of its proper divisors (5620511).

162993949 is an equidigital number, since it uses as much as digits as its factorization.

162993949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5620510.

The product of its digits is 944784, while the sum is 52.

The square root of 162993949 is about 12766.9083571552. The cubic root of 162993949 is about 546.2487975509.

The spelling of 162993949 in words is "one hundred sixty-two million, nine hundred ninety-three thousand, nine hundred forty-nine".