1213575563 has 2 divisors, whose sum is σ = 1213575564. Its totient is φ = 1213575562.

The previous prime is 1213575547. The next prime is 1213575593. The reversal of 1213575563 is 3655753121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213575563 - 2⁴ = 1213575547 is a prime.

It is a super-2 number, since 2×1213575563² = 2945531294221533938, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1213575533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606787781 + 606787782.

It is an arithmetic number, because the mean of its divisors is an integer number (606787782).

Almost surely, 2^1213575563 is an apocalyptic number.

1213575563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213575563 is an equidigital number, since it uses as much as digits as its factorization.

1213575563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94500, while the sum is 38.

The square root of 1213575563 is about 34836.4114541093. The cubic root of 1213575563 is about 1066.6508265985.

The spelling of 1213575563 in words is "one billion, two hundred thirteen million, five hundred seventy-five thousand, five hundred sixty-three".