2054197917 has 12 divisors (see below), whose sum is σ = 2967618940. Its totient is φ = 1369260288.

The previous prime is 2054197879. The next prime is 2054197921. The reversal of 2054197917 is 7197914502.

2054197917 is a `hidden beast` number, since 2 + 0 + 541 + 97 + 9 + 17 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 340734681 + 1713463236 = 18459^2 + 41394^2 .

It is not a de Polignac number, because 2054197917 - 2⁶ = 2054197853 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 (2054197967) 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, 69453 + ... + 94509.

Almost surely, 2^2054197917 is an apocalyptic number.

It is an amenable number.

2054197917 is a deficient number, since it is larger than the sum of its proper divisors (913421023).

2054197917 is a wasteful number, since it uses less digits than its factorization.

2054197917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34172 (or 34169 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 2054197917 is about 45323.2602203328. The cubic root of 2054197917 is about 1271.2006165355.

The spelling of 2054197917 in words is "two billion, fifty-four million, one hundred ninety-seven thousand, nine hundred seventeen".