2038065561 has 24 divisors (see below), whose sum is σ = 3455360064. Its totient is φ = 1133131680.

The previous prime is 2038065529. The next prime is 2038065577. The reversal of 2038065561 is 1655608302.

2038065561 is a `hidden beast` number, since 2 + 0 + 38 + 0 + 65 + 561 = 666.

It is not a de Polignac number, because 2038065561 - 2⁵ = 2038065529 is a prime.

It is a super-2 number, since 2×2038065561² = 8307422461868489442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2038065361) 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, 434835 + ... + 439496.

It is an arithmetic number, because the mean of its divisors is an integer number (143973336).

Almost surely, 2^2038065561 is an apocalyptic number.

2038065561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2038065561 is a deficient number, since it is larger than the sum of its proper divisors (1417294503).

2038065561 is a wasteful number, since it uses less digits than its factorization.

2038065561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874381 (or 874378 counting only the distinct ones).

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

The square root of 2038065561 is about 45144.9394838447. The cubic root of 2038065561 is about 1267.8641349599.

The spelling of 2038065561 in words is "two billion, thirty-eight million, sixty-five thousand, five hundred sixty-one".