162191601 has 24 divisors (see below), whose sum is σ = 275236416. Its totient is φ = 90735840.

The previous prime is 162191593. The next prime is 162191621. The reversal of 162191601 is 106191261.

It is not a de Polignac number, because 162191601 - 2³ = 162191593 is a prime.

It is a super-2 number, since 2×162191601² = 52612230869886402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (162191621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61725 + ... + 64298.

It is an arithmetic number, because the mean of its divisors is an integer number (11468184).

Almost surely, 2^162191601 is an apocalyptic number.

162191601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

162191601 is a deficient number, since it is larger than the sum of its proper divisors (113044815).

162191601 is a wasteful number, since it uses less digits than its factorization.

162191601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126053 (or 126050 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 162191601 is about 12735.4466352775. The cubic root of 162191601 is about 545.3510080676.

The spelling of 162191601 in words is "one hundred sixty-two million, one hundred ninety-one thousand, six hundred one".