1984148420 has 24 divisors (see below), whose sum is σ = 4167550464. Its totient is φ = 793499616.

The previous prime is 1984148407. The next prime is 1984148443. The reversal of 1984148420 is 248414891.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180317 + ... + 191003.

It is an arithmetic number, because the mean of its divisors is an integer number (173647936).

Almost surely, 2^1984148420 is an apocalyptic number.

1984148420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1984148420 is an abundant number, since it is smaller than the sum of its proper divisors (2183402044).

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

1984148420 is a wasteful number, since it uses less digits than its factorization.

1984148420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19979 (or 19977 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 1984148420 is about 44543.7809351653. The cubic root of 1984148420 is about 1256.5835937583.

The spelling of 1984148420 in words is "one billion, nine hundred eighty-four million, one hundred forty-eight thousand, four hundred twenty".