1917213796 has 9 divisors (see below), whose sum is σ = 3355277401. Its totient is φ = 958563112.

The previous prime is 1917213637. The next prime is 1917213803. The reversal of 1917213796 is 6973127191.

The square root of 1917213796 is 43786.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1444760100 + 472453696 = 38010^2 + 21736^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 76626 + ... + 98518.

Almost surely, 2^1917213796 is an apocalyptic number.

1917213796 is the 43786-th square number.

It is an amenable number.

1917213796 is a deficient number, since it is larger than the sum of its proper divisors (1438063605).

1917213796 is an frugal number, since it uses more digits than its factorization.

1917213796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43790 (or 21895 counting only the distinct ones).

The product of its digits is 142884, while the sum is 46.

The cubic root of 1917213796 is about 1242.2915041363.

Multiplying 1917213796 by its product of digits (142884), we get a square (273939176027664 = 16551108²).

The spelling of 1917213796 in words is "one billion, nine hundred seventeen million, two hundred thirteen thousand, seven hundred ninety-six".