162148591 has 6 divisors (see below), whose sum is σ = 178229576. Its totient is φ = 147407700.

The previous prime is 162148577. The next prime is 162148607. The reversal of 162148591 is 195841261.

It is not a de Polignac number, because 162148591 - 2¹³ = 162140399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 162148591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162148691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 669915 + ... + 670156.

Almost surely, 2^162148591 is an apocalyptic number.

162148591 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

162148591 is a deficient number, since it is larger than the sum of its proper divisors (16080985).

162148591 is a wasteful number, since it uses less digits than its factorization.

162148591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340093 (or 1340082 counting only the distinct ones).

The product of its digits is 17280, while the sum is 37.

The square root of 162148591 is about 12733.7579292211. The cubic root of 162148591 is about 545.3027983775.

The spelling of 162148591 in words is "one hundred sixty-two million, one hundred forty-eight thousand, five hundred ninety-one".