1958313145 has 4 divisors (see below), whose sum is σ = 2349975780. Its totient is φ = 1566650512.

The previous prime is 1958313143. The next prime is 1958313157. The reversal of 1958313145 is 5413138591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1507302976 + 451010169 = 38824^2 + 21237^2 .

It is a cyclic number.

It is not a de Polignac number, because 1958313145 - 2¹ = 1958313143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1958313098 and 1958313107.

It is not an unprimeable number, because it can be changed into a prime (1958313143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195831310 + ... + 195831319.

It is an arithmetic number, because the mean of its divisors is an integer number (587493945).

Almost surely, 2^1958313145 is an apocalyptic number.

It is an amenable number.

1958313145 is a deficient number, since it is larger than the sum of its proper divisors (391662635).

1958313145 is an equidigital number, since it uses as much as digits as its factorization.

1958313145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391662634.

The product of its digits is 64800, while the sum is 40.

The square root of 1958313145 is about 44252.8320562651. The cubic root of 1958313145 is about 1251.1058256978.

The spelling of 1958313145 in words is "one billion, nine hundred fifty-eight million, three hundred thirteen thousand, one hundred forty-five".