1978018324 has 6 divisors (see below), whose sum is σ = 3461532074. Its totient is φ = 989009160.

The previous prime is 1978018321. The next prime is 1978018337. The reversal of 1978018324 is 4238108791.

It can be written as a sum of positive squares in only one way, i.e., 1174295824 + 803722500 = 34268^2 + 28350^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1978018321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247252287 + ... + 247252294.

Almost surely, 2^1978018324 is an apocalyptic number.

It is an amenable number.

1978018324 is a deficient number, since it is larger than the sum of its proper divisors (1483513750).

1978018324 is a wasteful number, since it uses less digits than its factorization.

1978018324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494504585 (or 494504583 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 1978018324 is about 44474.9179201041. The cubic root of 1978018324 is about 1255.2881724243.

The spelling of 1978018324 in words is "one billion, nine hundred seventy-eight million, eighteen thousand, three hundred twenty-four".