1393540633 has 2 divisors, whose sum is σ = 1393540634. Its totient is φ = 1393540632.

The previous prime is 1393540601. The next prime is 1393540637. The reversal of 1393540633 is 3360453931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1347477264 + 46063369 = 36708^2 + 6787^2 .

It is a cyclic number.

It is not a de Polignac number, because 1393540633 - 2⁵ = 1393540601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1393540592 and 1393540601.

It is not a weakly prime, because it can be changed into another prime (1393540637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696770316 + 696770317.

It is an arithmetic number, because the mean of its divisors is an integer number (696770317).

Almost surely, 2^1393540633 is an apocalyptic number.

It is an amenable number.

1393540633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393540633 is an equidigital number, since it uses as much as digits as its factorization.

1393540633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 37.

The square root of 1393540633 is about 37330.1571520935. The cubic root of 1393540633 is about 1116.9658077406.

The spelling of 1393540633 in words is "one billion, three hundred ninety-three million, five hundred forty thousand, six hundred thirty-three".