1918212050 has 12 divisors (see below), whose sum is σ = 3567874506. Its totient is φ = 767284800.

The previous prime is 1918212007. The next prime is 1918212061. The reversal of 1918212050 is 502128191.

It can be written as a sum of positive squares in 3 ways, for example, as 1333491289 + 584720761 = 36517^2 + 24181^2 .

It is a super-3 number, since 3×1918212050³ (a number of 29 digits) contains 333 as substring.

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 5 ways as a sum of consecutive naturals, for example, 19182071 + ... + 19182170.

Almost surely, 2^1918212050 is an apocalyptic number.

1918212050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1918212050 is a deficient number, since it is larger than the sum of its proper divisors (1649662456).

1918212050 is a wasteful number, since it uses less digits than its factorization.

1918212050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38364253 (or 38364248 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 1918212050 is about 43797.3977537479. The cubic root of 1918212050 is about 1242.5070786491.

The spelling of 1918212050 in words is "one billion, nine hundred eighteen million, two hundred twelve thousand, fifty".