1778200480 has 48 divisors (see below), whose sum is σ = 4801144320. Its totient is φ = 609668352.

The previous prime is 1778200477. The next prime is 1778200483. The reversal of 1778200480 is 840028771.

It is an interprime number because it is at equal distance from previous prime (1778200477) and next prime (1778200483).

It is not an unprimeable number, because it can be changed into a prime (1778200483) 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, 792720 + ... + 794959.

It is an arithmetic number, because the mean of its divisors is an integer number (100023840).

Almost surely, 2^1778200480 is an apocalyptic number.

1778200480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1778200480 is an abundant number, since it is smaller than the sum of its proper divisors (3022943840).

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

1778200480 is a wasteful number, since it uses less digits than its factorization.

1778200480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587701 (or 1587693 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 1778200480 is about 42168.7144693788. The cubic root of 1778200480 is about 1211.5097335602.

The spelling of 1778200480 in words is "one billion, seven hundred seventy-eight million, two hundred thousand, four hundred eighty".