1020562613 has 4 divisors (see below), whose sum is σ = 1166357280. Its totient is φ = 874767948.

The previous prime is 1020562607. The next prime is 1020562619. The reversal of 1020562613 is 3162650201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3162650201 = 719 ⋅4398679.

It is an interprime number because it is at equal distance from previous prime (1020562607) and next prime (1020562619).

It is a cyclic number.

It is not a de Polignac number, because 1020562613 - 2⁸ = 1020562357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020562619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72897323 + ... + 72897336.

It is an arithmetic number, because the mean of its divisors is an integer number (291589320).

Almost surely, 2^1020562613 is an apocalyptic number.

It is an amenable number.

1020562613 is a deficient number, since it is larger than the sum of its proper divisors (145794667).

1020562613 is an equidigital number, since it uses as much as digits as its factorization.

1020562613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145794666.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1020562613 is about 31946.2456792657. The cubic root of 1020562613 is about 1006.8077536539.

The spelling of 1020562613 in words is "one billion, twenty million, five hundred sixty-two thousand, six hundred thirteen".