1973490313 has 2 divisors, whose sum is σ = 1973490314. Its totient is φ = 1973490312.

The previous prime is 1973490307. The next prime is 1973490319. The reversal of 1973490313 is 3130943791.

1973490313 = 31412² + 31413².

It is a balanced prime because it is at equal distance from previous prime (1973490307) and next prime (1973490319).

It can be written as a sum of positive squares in only one way, i.e., 986776569 + 986713744 = 31413^2 + 31412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1973490313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1973490319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986745156 + 986745157.

It is an arithmetic number, because the mean of its divisors is an integer number (986745157).

Almost surely, 2^1973490313 is an apocalyptic number.

1973490313 is the 31413-rd centered square number.

It is an amenable number.

1973490313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973490313 is an equidigital number, since it uses as much as digits as its factorization.

1973490313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 1973490313 is about 44423.9835336724. The cubic root of 1973490313 is about 1254.3295865370.

The spelling of 1973490313 in words is "one billion, nine hundred seventy-three million, four hundred ninety thousand, three hundred thirteen".