1978524330 has 16 divisors (see below), whose sum is σ = 4748458464. Its totient is φ = 527606480.

The previous prime is 1978524323. The next prime is 1978524343. The reversal of 1978524330 is 334258791.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32975376 + ... + 32975435.

It is an arithmetic number, because the mean of its divisors is an integer number (296778654).

Almost surely, 2^1978524330 is an apocalyptic number.

1978524330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1978524330 is an abundant number, since it is smaller than the sum of its proper divisors (2769934134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1978524330 is a wasteful number, since it uses less digits than its factorization.

1978524330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65950821.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 1978524330 is about 44480.6062233868. The cubic root of 1978524330 is about 1255.3952036525.

The spelling of 1978524330 in words is "one billion, nine hundred seventy-eight million, five hundred twenty-four thousand, three hundred thirty".