2536671861 has 12 divisors (see below), whose sum is σ = 3690828492. Its totient is φ = 1678769856.

The previous prime is 2536671857. The next prime is 2536671877. The reversal of 2536671861 is 1681766352.

2536671861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2204302500 + 332369361 = 46950^2 + 18231^2 .

It is not a de Polignac number, because 2536671861 - 2² = 2536671857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2536671821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1027426 + ... + 1029891.

It is an arithmetic number, because the mean of its divisors is an integer number (307569041).

Almost surely, 2^2536671861 is an apocalyptic number.

It is an amenable number.

2536671861 is a deficient number, since it is larger than the sum of its proper divisors (1154156631).

2536671861 is a wasteful number, since it uses less digits than its factorization.

2536671861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057460 (or 2057457 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 2536671861 is about 50365.3835585514. The cubic root of 2536671861 is about 1363.8128050468.

The spelling of 2536671861 in words is "two billion, five hundred thirty-six million, six hundred seventy-one thousand, eight hundred sixty-one".