1918776466 has 16 divisors (see below), whose sum is σ = 2958891768. Its totient is φ = 932646400.

The previous prime is 1918776439. The next prime is 1918776469. The reversal of 1918776466 is 6646778191.

It can be written as a sum of positive squares in 4 ways, for example, as 1356375241 + 562401225 = 36829^2 + 23715^2 .

It is not an unprimeable number, because it can be changed into a prime (1918776469) 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, 18595 + ... + 64678.

Almost surely, 2^1918776466 is an apocalyptic number.

1918776466 is a deficient number, since it is larger than the sum of its proper divisors (1040115302).

1918776466 is a wasteful number, since it uses less digits than its factorization.

1918776466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83597.

The product of its digits is 3048192, while the sum is 55.

The square root of 1918776466 is about 43803.8407676770. The cubic root of 1918776466 is about 1242.6289320705.

The spelling of 1918776466 in words is "one billion, nine hundred eighteen million, seven hundred seventy-six thousand, four hundred sixty-six".