1918249484 has 24 divisors (see below), whose sum is σ = 3384763200. Its totient is φ = 951189840.

The previous prime is 1918249483. The next prime is 1918249513. The reversal of 1918249484 is 4849428191.

It is not an unprimeable number, because it can be changed into a prime (1918249483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 899099 + ... + 901229.

It is an arithmetic number, because the mean of its divisors is an integer number (141031800).

Almost surely, 2^1918249484 is an apocalyptic number.

It is an amenable number.

1918249484 is a deficient number, since it is larger than the sum of its proper divisors (1466513716).

1918249484 is a wasteful number, since it uses less digits than its factorization.

1918249484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893 (or 3891 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The square root of 1918249484 is about 43797.8251058200. The cubic root of 1918249484 is about 1242.5151611249.

The spelling of 1918249484 in words is "one billion, nine hundred eighteen million, two hundred forty-nine thousand, four hundred eighty-four".