1984299660 has 96 divisors (see below), whose sum is σ = 7055301120. Its totient is φ = 453553344.

The previous prime is 1984299641. The next prime is 1984299661. The reversal of 1984299660 is 669924891.

It is a super-2 number, since 2×1984299660² = 7874890281352231200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1984299597 and 1984299606.

It is not an unprimeable number, because it can be changed into a prime (1984299661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258694 + ... + 266253.

It is an arithmetic number, because the mean of its divisors is an integer number (73492720).

Almost surely, 2^1984299660 is an apocalyptic number.

1984299660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1984299660 is an abundant number, since it is smaller than the sum of its proper divisors (5071001460).

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

1984299660 is a wasteful number, since it uses less digits than its factorization.

1984299660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524972 (or 524964 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The square root of 1984299660 is about 44545.4785584351. The cubic root of 1984299660 is about 1256.6155202803.

The spelling of 1984299660 in words is "one billion, nine hundred eighty-four million, two hundred ninety-nine thousand, six hundred sixty".