537161945 has 4 divisors (see below), whose sum is σ = 644594340. Its totient is φ = 429729552.

The previous prime is 537161929. The next prime is 537161953. The reversal of 537161945 is 549161735.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 189227536 + 347934409 = 13756^2 + 18653^2 .

It is a cyclic number.

It is not a de Polignac number, because 537161945 - 2⁴ = 537161929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53716190 + ... + 53716199.

It is an arithmetic number, because the mean of its divisors is an integer number (161148585).

Almost surely, 2^537161945 is an apocalyptic number.

It is an amenable number.

537161945 is a deficient number, since it is larger than the sum of its proper divisors (107432395).

537161945 is a wasteful number, since it uses less digits than its factorization.

537161945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107432394.

The product of its digits is 113400, while the sum is 41.

The square root of 537161945 is about 23176.7544104001. The cubic root of 537161945 is about 812.8961735012.

The spelling of 537161945 in words is "five hundred thirty-seven million, one hundred sixty-one thousand, nine hundred forty-five".