8454036861 has 12 divisors (see below), whose sum is σ = 12509225820. Its totient is φ = 5498560320.

The previous prime is 8454036853. The next prime is 8454036893. The reversal of 8454036861 is 1686304548.

It can be written as a sum of positive squares in 2 ways, for example, as 2078812836 + 6375224025 = 45594^2 + 79845^2 .

It is not a de Polignac number, because 8454036861 - 2³ = 8454036853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8454036841) 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, 11454966 + ... + 11455703.

It is an arithmetic number, because the mean of its divisors is an integer number (1042435485).

Almost surely, 2^8454036861 is an apocalyptic number.

It is an amenable number.

8454036861 is a deficient number, since it is larger than the sum of its proper divisors (4055188959).

8454036861 is a wasteful number, since it uses less digits than its factorization.

8454036861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22910716 (or 22910713 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 8454036861 is about 91945.8365615322. The cubic root of 8454036861 is about 2037.1423577218.

The spelling of 8454036861 in words is "eight billion, four hundred fifty-four million, thirty-six thousand, eight hundred sixty-one".