345161538 has 54 divisors (see below), whose sum is σ = 779690457. Its totient is φ = 110350800.

The previous prime is 345161527. The next prime is 345161539. The reversal of 345161538 is 835161543.

345161538 is a `hidden beast` number, since 3 + 4 + 5 + 1 + 615 + 38 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 344956329 + 205209 = 18573^2 + 453^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=13137.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (345161539) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2285763 + ... + 2285913.

Almost surely, 2^345161538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345161538

345161538 is an abundant number, since it is smaller than the sum of its proper divisors (434528919).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345161538 is a wasteful number, since it uses less digits than its factorization.

345161538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 185 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 345161538 is about 18578.5235688953. The cubic root of 345161538 is about 701.4673559593.

The spelling of 345161538 in words is "three hundred forty-five million, one hundred sixty-one thousand, five hundred thirty-eight".