1020345497 has 2 divisors, whose sum is σ = 1020345498. Its totient is φ = 1020345496.

The previous prime is 1020345437. The next prime is 1020345503. The reversal of 1020345497 is 7945430201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 700078681 + 320266816 = 26459^2 + 17896^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020345497 - 2⁶ = 1020345433 is a prime.

It is a super-2 number, since 2×1020345497² = 2082209866496354018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1020345407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510172748 + 510172749.

It is an arithmetic number, because the mean of its divisors is an integer number (510172749).

Almost surely, 2^1020345497 is an apocalyptic number.

It is an amenable number.

1020345497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020345497 is an equidigital number, since it uses as much as digits as its factorization.

1020345497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1020345497 is about 31942.8473527330. The cubic root of 1020345497 is about 1006.7363520000.

Adding to 1020345497 its reverse (7945430201), we get a palindrome (8965775698).

The spelling of 1020345497 in words is "one billion, twenty million, three hundred forty-five thousand, four hundred ninety-seven".