1911828394 has 24 divisors (see below), whose sum is σ = 3368992068. Its totient is φ = 811238400.

The previous prime is 1911828383. The next prime is 1911828403. The reversal of 1911828394 is 4938281191.

It can be written as a sum of positive squares in 2 ways, for example, as 1710897769 + 200930625 = 41363^2 + 14175^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86679 + ... + 106474.

Almost surely, 2^1911828394 is an apocalyptic number.

1911828394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1911828394 is a deficient number, since it is larger than the sum of its proper divisors (1457163674).

1911828394 is a wasteful number, since it uses less digits than its factorization.

1911828394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193270 (or 193263 counting only the distinct ones).

The product of its digits is 124416, while the sum is 46.

The square root of 1911828394 is about 43724.4599051835. The cubic root of 1911828394 is about 1241.1272255023.

The spelling of 1911828394 in words is "one billion, nine hundred eleven million, eight hundred twenty-eight thousand, three hundred ninety-four".