8461654591 has 4 divisors (see below), whose sum is σ = 9112551112. Its totient is φ = 7810758072.

The previous prime is 8461654577. The next prime is 8461654657. The reversal of 8461654591 is 1954561648.

It is a happy number.

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

It is not a de Polignac number, because 8461654591 - 2⁷ = 8461654463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8461654291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325448241 + ... + 325448266.

It is an arithmetic number, because the mean of its divisors is an integer number (2278137778).

Almost surely, 2^8461654591 is an apocalyptic number.

8461654591 is a deficient number, since it is larger than the sum of its proper divisors (650896521).

8461654591 is a wasteful number, since it uses less digits than its factorization.

8461654591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650896520.

The product of its digits is 1036800, while the sum is 49.

The square root of 8461654591 is about 91987.2523287874. The cubic root of 8461654591 is about 2037.7540474172.

The spelling of 8461654591 in words is "eight billion, four hundred sixty-one million, six hundred fifty-four thousand, five hundred ninety-one".