1396843818 has 32 divisors (see below), whose sum is σ = 2886285312. Its totient is φ = 450207600.

The previous prime is 1396843757. The next prime is 1396843823. The reversal of 1396843818 is 8183486931.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280813 + ... + 285743.

It is an arithmetic number, because the mean of its divisors is an integer number (90196416).

Almost surely, 2^1396843818 is an apocalyptic number.

1396843818 is an abundant number, since it is smaller than the sum of its proper divisors (1489441494).

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

1396843818 is a wasteful number, since it uses less digits than its factorization.

1396843818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6490.

The product of its digits is 995328, while the sum is 51.

The square root of 1396843818 is about 37374.3738141524. The cubic root of 1396843818 is about 1117.8476462440.

The spelling of 1396843818 in words is "one billion, three hundred ninety-six million, eight hundred forty-three thousand, eight hundred eighteen".