1872242291 has 16 divisors (see below), whose sum is σ = 2003618400. Its totient is φ = 1746033408.

The previous prime is 1872242269. The next prime is 1872242293. The reversal of 1872242291 is 1922422781.

It is a cyclic number.

It is not a de Polignac number, because 1872242291 - 2¹⁴ = 1872225907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1872242293) 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 15 ways as a sum of consecutive naturals, for example, 142871 + ... + 155423.

It is an arithmetic number, because the mean of its divisors is an integer number (125226150).

Almost surely, 2^1872242291 is an apocalyptic number.

1872242291 is a deficient number, since it is larger than the sum of its proper divisors (131376109).

1872242291 is a wasteful number, since it uses less digits than its factorization.

1872242291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12758.

The product of its digits is 32256, while the sum is 38.

The square root of 1872242291 is about 43269.4151913335. The cubic root of 1872242291 is about 1232.5011987420.

The spelling of 1872242291 in words is "one billion, eight hundred seventy-two million, two hundred forty-two thousand, two hundred ninety-one".