2154436317 has 12 divisors (see below), whose sum is σ = 3394869504. Its totient is φ = 1305718920.

The previous prime is 2154436237. The next prime is 2154436373. The reversal of 2154436317 is 7136344512.

2154436317 is a `hidden beast` number, since 2 + 15 + 4 + 4 + 3 + 631 + 7 = 666.

It is not a de Polignac number, because 2154436317 - 2⁷ = 2154436189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154436387) 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, 10880893 + ... + 10881090.

It is an arithmetic number, because the mean of its divisors is an integer number (282905792).

Almost surely, 2^2154436317 is an apocalyptic number.

It is an amenable number.

2154436317 is a deficient number, since it is larger than the sum of its proper divisors (1240433187).

2154436317 is a wasteful number, since it uses less digits than its factorization.

2154436317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21762000 (or 21761997 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 2154436317 is about 46415.9058621072. The cubic root of 2154436317 is about 1291.5499901287.

The spelling of 2154436317 in words is "two billion, one hundred fifty-four million, four hundred thirty-six thousand, three hundred seventeen".