164790531145 has 8 divisors (see below), whose sum is σ = 198483764040. Its totient is φ = 131342340480.

The previous prime is 164790531109. The next prime is 164790531149. The reversal of 164790531145 is 541135097461.

It can be written as a sum of positive squares in 4 ways, for example, as 9 + 164790531136 = 3^2 + 405944^2 .

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

It is not a de Polignac number, because 164790531145 - 2⁹ = 164790530633 is a prime.

It is a super-2 number, since 2×164790531145² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164790531095 and 164790531104.

It is not an unprimeable number, because it can be changed into a prime (164790531149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61259076 + ... + 61261765.

It is an arithmetic number, because the mean of its divisors is an integer number (24810470505).

Almost surely, 2^164790531145 is an apocalyptic number.

It is an amenable number.

164790531145 is a deficient number, since it is larger than the sum of its proper divisors (33693232895).

164790531145 is a wasteful number, since it uses less digits than its factorization.

164790531145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122521115.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 164790531145 in words is "one hundred sixty-four billion, seven hundred ninety million, five hundred thirty-one thousand, one hundred forty-five".