165458337538 has 8 divisors (see below), whose sum is σ = 267278852988. Its totient is φ = 76365386544.

The previous prime is 165458337479. The next prime is 165458337547. The reversal of 165458337538 is 835733854561.

It can be written as a sum of positive squares in 2 ways, for example, as 156311901769 + 9146435769 = 395363^2 + 95637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×165458337538² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3181891081 + ... + 3181891132.

Almost surely, 2^165458337538 is an apocalyptic number.

165458337538 is a deficient number, since it is larger than the sum of its proper divisors (101820515450).

165458337538 is a wasteful number, since it uses less digits than its factorization.

165458337538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6363782228.

The product of its digits is 36288000, while the sum is 58.

The spelling of 165458337538 in words is "one hundred sixty-five billion, four hundred fifty-eight million, three hundred thirty-seven thousand, five hundred thirty-eight".