1396068813 has 12 divisors (see below), whose sum is σ = 2054592540. Its totient is φ = 913151616.

The previous prime is 1396068809. The next prime is 1396068827. The reversal of 1396068813 is 3188606931.

It is a happy number.

1396068813 is a `hidden beast` number, since 1 + 39 + 606 + 8 + 8 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 993384324 + 402684489 = 31518^2 + 20067^2 .

It is not a de Polignac number, because 1396068813 - 2² = 1396068809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396068853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1462908 + ... + 1463861.

It is an arithmetic number, because the mean of its divisors is an integer number (171216045).

Almost surely, 2^1396068813 is an apocalyptic number.

It is an amenable number.

1396068813 is a deficient number, since it is larger than the sum of its proper divisors (658523727).

1396068813 is a wasteful number, since it uses less digits than its factorization.

1396068813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2926828 (or 2926825 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 1396068813 is about 37364.0042420509. The cubic root of 1396068813 is about 1117.6408710900.

The spelling of 1396068813 in words is "one billion, three hundred ninety-six million, sixty-eight thousand, eight hundred thirteen".