1996388357 has 2 divisors, whose sum is σ = 1996388358. Its totient is φ = 1996388356.

The previous prime is 1996388351. The next prime is 1996388377. The reversal of 1996388357 is 7538836991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1395844321 + 600544036 = 37361^2 + 24506^2 .

It is a cyclic number.

It is not a de Polignac number, because 1996388357 - 2¹² = 1996384261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1996388296 and 1996388305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1996388351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998194178 + 998194179.

It is an arithmetic number, because the mean of its divisors is an integer number (998194179).

Almost surely, 2^1996388357 is an apocalyptic number.

It is an amenable number.

1996388357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1996388357 is an equidigital number, since it uses as much as digits as its factorization.

1996388357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 59.

The square root of 1996388357 is about 44680.9619077298. The cubic root of 1996388357 is about 1259.1621954194.

The spelling of 1996388357 in words is "one billion, nine hundred ninety-six million, three hundred eighty-eight thousand, three hundred fifty-seven".