162748993 has 6 divisors (see below), whose sum is σ = 178889522. Its totient is φ = 147953520.

The previous prime is 162748981. The next prime is 162749009. The reversal of 162748993 is 399847261.

It can be written as a sum of positive squares in only one way, i.e., 150970369 + 11778624 = 12287^2 + 3432^2 .

It is not a de Polignac number, because 162748993 - 2¹⁷ = 162617921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162748093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 672396 + ... + 672637.

Almost surely, 2^162748993 is an apocalyptic number.

It is an amenable number.

162748993 is a deficient number, since it is larger than the sum of its proper divisors (16140529).

162748993 is a wasteful number, since it uses less digits than its factorization.

162748993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345055 (or 1345044 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The square root of 162748993 is about 12757.3113546703. The cubic root of 162748993 is about 545.9750164115.

The spelling of 162748993 in words is "one hundred sixty-two million, seven hundred forty-eight thousand, nine hundred ninety-three".