1959318061 has 2 divisors, whose sum is σ = 1959318062. Its totient is φ = 1959318060.

The previous prime is 1959318047. The next prime is 1959318077. The reversal of 1959318061 is 1608139591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1902617161 + 56700900 = 43619^2 + 7530^2 .

It is an emirp because it is prime and its reverse (1608139591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1959318061 - 2⁷ = 1959317933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1959317999 and 1959318017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1959318161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 979659030 + 979659031.

It is an arithmetic number, because the mean of its divisors is an integer number (979659031).

Almost surely, 2^1959318061 is an apocalyptic number.

It is an amenable number.

1959318061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1959318061 is an equidigital number, since it uses as much as digits as its factorization.

1959318061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 1959318061 is about 44264.1848563825. The cubic root of 1959318061 is about 1251.3197923747.

The spelling of 1959318061 in words is "one billion, nine hundred fifty-nine million, three hundred eighteen thousand, sixty-one".