1914772780 has 24 divisors (see below), whose sum is σ = 4029102000. Its totient is φ = 764370240.

The previous prime is 1914772759. The next prime is 1914772787. The reversal of 1914772780 is 872774191.

It is a self number, because there is not a number n which added to its sum of digits gives 1914772780.

It is not an unprimeable number, because it can be changed into a prime (1914772787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85951 + ... + 105910.

It is an arithmetic number, because the mean of its divisors is an integer number (167879250).

Almost surely, 2^1914772780 is an apocalyptic number.

1914772780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1914772780 is an abundant number, since it is smaller than the sum of its proper divisors (2114329220).

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

1914772780 is a wasteful number, since it uses less digits than its factorization.

1914772780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192369 (or 192367 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 46.

The square root of 1914772780 is about 43758.1167327846. The cubic root of 1914772780 is about 1241.7640475151.

The spelling of 1914772780 in words is "one billion, nine hundred fourteen million, seven hundred seventy-two thousand, seven hundred eighty".