1801148811 has 24 divisors (see below), whose sum is σ = 3047586624. Its totient is φ = 935660880.

The previous prime is 1801148807. The next prime is 1801148851. The reversal of 1801148811 is 1188411081.

It is not a de Polignac number, because 1801148811 - 2² = 1801148807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1801148851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 555325 + ... + 558558.

It is an arithmetic number, because the mean of its divisors is an integer number (126982776).

Almost surely, 2^1801148811 is an apocalyptic number.

1801148811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1801148811 is a deficient number, since it is larger than the sum of its proper divisors (1246437813).

1801148811 is a wasteful number, since it uses less digits than its factorization.

1801148811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113911 (or 1113904 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 33.

The square root of 1801148811 is about 42439.9435791331. The cubic root of 1801148811 is about 1216.6991329882.

Adding to 1801148811 its reverse (1188411081), we get a palindrome (2989559892).

The spelling of 1801148811 in words is "one billion, eight hundred one million, one hundred forty-eight thousand, eight hundred eleven".