1996461557 has 2 divisors, whose sum is σ = 1996461558. Its totient is φ = 1996461556.

The previous prime is 1996461547. The next prime is 1996461601. The reversal of 1996461557 is 7551646991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1742728516 + 253733041 = 41746^2 + 15929^2 .

It is a cyclic number.

It is not a de Polignac number, because 1996461557 - 2⁴ = 1996461541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1996461499 and 1996461508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1996461517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998230778 + 998230779.

It is an arithmetic number, because the mean of its divisors is an integer number (998230779).

Almost surely, 2^1996461557 is an apocalyptic number.

It is an amenable number.

1996461557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1996461557 is an equidigital number, since it uses as much as digits as its factorization.

1996461557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 53.

The square root of 1996461557 is about 44681.7810410462. The cubic root of 1996461557 is about 1259.1775848009.

The spelling of 1996461557 in words is "one billion, nine hundred ninety-six million, four hundred sixty-one thousand, five hundred fifty-seven".