2609771368 has 8 divisors (see below), whose sum is σ = 4893321330. Its totient is φ = 1304885680.

The previous prime is 2609771347. The next prime is 2609771369. The reversal of 2609771368 is 8631779062.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2271284964 + 338486404 = 47658^2 + 18398^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2609771369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163110703 + ... + 163110718.

Almost surely, 2^2609771368 is an apocalyptic number.

It is an amenable number.

2609771368 is a deficient number, since it is larger than the sum of its proper divisors (2283549962).

2609771368 is a wasteful number, since it uses less digits than its factorization.

2609771368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326221427 (or 326221423 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 2609771368 is about 51085.9214265535. The cubic root of 2609771368 is about 1376.7893166630.

The spelling of 2609771368 in words is "two billion, six hundred nine million, seven hundred seventy-one thousand, three hundred sixty-eight".