1863055011 has 4 divisors (see below), whose sum is σ = 2484073352. Its totient is φ = 1242036672.

The previous prime is 1863054983. The next prime is 1863055031. The reversal of 1863055011 is 1105503681.

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

It is not a de Polignac number, because 1863055011 - 2¹³ = 1863046819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1863055011.

It is not an unprimeable number, because it can be changed into a prime (1863055031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310509166 + ... + 310509171.

It is an arithmetic number, because the mean of its divisors is an integer number (621018338).

Almost surely, 2^1863055011 is an apocalyptic number.

1863055011 is a deficient number, since it is larger than the sum of its proper divisors (621018341).

1863055011 is an equidigital number, since it uses as much as digits as its factorization.

1863055011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621018340.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1863055011 is about 43163.1209599121. The cubic root of 1863055011 is about 1230.4818899693.

Adding to 1863055011 its reverse (1105503681), we get a palindrome (2968558692).

The spelling of 1863055011 in words is "one billion, eight hundred sixty-three million, fifty-five thousand, eleven".