1978480283 has 8 divisors (see below), whose sum is σ = 2165600976. Its totient is φ = 1796349600.

The previous prime is 1978480277. The next prime is 1978480289. The reversal of 1978480283 is 3820848791.

It is an interprime number because it is at equal distance from previous prime (1978480277) and next prime (1978480289).

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

It is a cyclic number.

It is not a de Polignac number, because 1978480283 - 2⁶ = 1978480219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1978480289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1246673 + ... + 1248258.

It is an arithmetic number, because the mean of its divisors is an integer number (270700122).

Almost surely, 2^1978480283 is an apocalyptic number.

1978480283 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1978480283 is a deficient number, since it is larger than the sum of its proper divisors (187120693).

1978480283 is a wasteful number, since it uses less digits than its factorization.

1978480283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495005.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 1978480283 is about 44480.1110947354. Note that the first 3 decimals coincide. The cubic root of 1978480283 is about 1255.3858874832.

The spelling of 1978480283 in words is "one billion, nine hundred seventy-eight million, four hundred eighty thousand, two hundred eighty-three".