1872242811 has 24 divisors (see below), whose sum is σ = 2753449920. Its totient is φ = 1225551600.

The previous prime is 1872242797. The next prime is 1872242831. The reversal of 1872242811 is 1182422781.

It is a happy number.

It is not a de Polignac number, because 1872242811 - 2¹¹ = 1872240763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1872242831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 620296 + ... + 623306.

It is an arithmetic number, because the mean of its divisors is an integer number (114727080).

Almost surely, 2^1872242811 is an apocalyptic number.

1872242811 is a deficient number, since it is larger than the sum of its proper divisors (881207109).

1872242811 is a wasteful number, since it uses less digits than its factorization.

1872242811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247 (or 4244 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 1872242811 is about 43269.4212001963. The cubic root of 1872242811 is about 1232.5013128477.

The spelling of 1872242811 in words is "one billion, eight hundred seventy-two million, two hundred forty-two thousand, eight hundred eleven".