1958497361 has 2 divisors, whose sum is σ = 1958497362. Its totient is φ = 1958497360.

The previous prime is 1958497297. The next prime is 1958497369. The reversal of 1958497361 is 1637948591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1408876225 + 549621136 = 37535^2 + 23444^2 .

It is a cyclic number.

It is not a de Polignac number, because 1958497361 - 2⁶ = 1958497297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1958497369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 979248680 + 979248681.

It is an arithmetic number, because the mean of its divisors is an integer number (979248681).

Almost surely, 2^1958497361 is an apocalyptic number.

It is an amenable number.

1958497361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1958497361 is an equidigital number, since it uses as much as digits as its factorization.

1958497361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 53.

The square root of 1958497361 is about 44254.9134108293. The cubic root of 1958497361 is about 1251.1450544400.

The spelling of 1958497361 in words is "one billion, nine hundred fifty-eight million, four hundred ninety-seven thousand, three hundred sixty-one".