1916755240 has 16 divisors (see below), whose sum is σ = 4312699380. Its totient is φ = 766702080.

The previous prime is 1916755231. The next prime is 1916755273. The reversal of 1916755240 is 425576191.

It can be written as a sum of positive squares in 2 ways, for example, as 1872639076 + 44116164 = 43274^2 + 6642^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 47918881 = 1916755240 / (1 + 9 + 1 + 6 + 7 + 5 + 5 + 2 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1916755193 and 1916755202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23959401 + ... + 23959480.

Almost surely, 2^1916755240 is an apocalyptic number.

1916755240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1916755240 is an abundant number, since it is smaller than the sum of its proper divisors (2395944140).

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

1916755240 is a wasteful number, since it uses less digits than its factorization.

1916755240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47918892 (or 47918888 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 1916755240 is about 43780.7633556109. The cubic root of 1916755240 is about 1242.1924531685.

The spelling of 1916755240 in words is "one billion, nine hundred sixteen million, seven hundred fifty-five thousand, two hundred forty".