2054904491 has 4 divisors (see below), whose sum is σ = 2055234000. Its totient is φ = 2054574984.

The previous prime is 2054904463. The next prime is 2054904493. The reversal of 2054904491 is 1944094502.

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

It is a cyclic number.

It is not a de Polignac number, because 2054904491 - 2¹⁸ = 2054642347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2054904493) 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, 155216 + ... + 167933.

It is an arithmetic number, because the mean of its divisors is an integer number (513808500).

Almost surely, 2^2054904491 is an apocalyptic number.

2054904491 is a deficient number, since it is larger than the sum of its proper divisors (329509).

2054904491 is an equidigital number, since it uses as much as digits as its factorization.

2054904491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329508.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 2054904491 is about 45331.0543777662. The cubic root of 2054904491 is about 1271.3463497085.

Adding to 2054904491 its reverse (1944094502), we get a palindrome (3998998993).

The spelling of 2054904491 in words is "two billion, fifty-four million, nine hundred four thousand, four hundred ninety-one".