1396140068 has 6 divisors (see below), whose sum is σ = 2443245126. Its totient is φ = 698070032.

The previous prime is 1396140041. The next prime is 1396140071. The reversal of 1396140068 is 8600416931.

It can be written as a sum of positive squares in only one way, i.e., 1240589284 + 155550784 = 35222^2 + 12472^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174517505 + ... + 174517512.

It is an arithmetic number, because the mean of its divisors is an integer number (407207521).

Almost surely, 2^1396140068 is an apocalyptic number.

It is an amenable number.

1396140068 is a deficient number, since it is larger than the sum of its proper divisors (1047105058).

1396140068 is a wasteful number, since it uses less digits than its factorization.

1396140068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349035021 (or 349035019 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1396140068 is about 37364.9577545593. The cubic root of 1396140068 is about 1117.6598854692.

Adding to 1396140068 its reverse (8600416931), we get a palindrome (9996556999).

The spelling of 1396140068 in words is "one billion, three hundred ninety-six million, one hundred forty thousand, sixty-eight".