1811648054 has 4 divisors (see below), whose sum is σ = 2717472084. Its totient is φ = 905824026.

The previous prime is 1811648053. The next prime is 1811648071. The reversal of 1811648054 is 4508461181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4508461181 = 7 ⋅644065883.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1811647999 and 1811648017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1811648053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452912012 + ... + 452912015.

It is an arithmetic number, because the mean of its divisors is an integer number (679368021).

Almost surely, 2^1811648054 is an apocalyptic number.

1811648054 is a deficient number, since it is larger than the sum of its proper divisors (905824030).

1811648054 is an equidigital number, since it uses as much as digits as its factorization.

1811648054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905824029.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 1811648054 is about 42563.4591404411. The cubic root of 1811648054 is about 1219.0586786168.

The spelling of 1811648054 in words is "one billion, eight hundred eleven million, six hundred forty-eight thousand, fifty-four".