1984379542 has 8 divisors (see below), whose sum is σ = 2979237456. Its totient is φ = 991300392.

The previous prime is 1984379503. The next prime is 1984379543. The reversal of 1984379542 is 2459734891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1984379542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984379543) 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 3 ways as a sum of consecutive naturals, for example, 441898 + ... + 446365.

It is an arithmetic number, because the mean of its divisors is an integer number (372404682).

Almost surely, 2^1984379542 is an apocalyptic number.

1984379542 is a deficient number, since it is larger than the sum of its proper divisors (994857914).

1984379542 is a wasteful number, since it uses less digits than its factorization.

1984379542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889382.

The product of its digits is 2177280, while the sum is 52.

The square root of 1984379542 is about 44546.3751836218. The cubic root of 1984379542 is about 1256.6323825879.

The spelling of 1984379542 in words is "one billion, nine hundred eighty-four million, three hundred seventy-nine thousand, five hundred forty-two".