1249087163 has 2 divisors, whose sum is σ = 1249087164. Its totient is φ = 1249087162.

The previous prime is 1249087157. The next prime is 1249087183. The reversal of 1249087163 is 3617809421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1249087163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1249087163.

It is not a weakly prime, because it can be changed into another prime (1249087153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624543581 + 624543582.

It is an arithmetic number, because the mean of its divisors is an integer number (624543582).

Almost surely, 2^1249087163 is an apocalyptic number.

1249087163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249087163 is an equidigital number, since it uses as much as digits as its factorization.

1249087163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1249087163 is about 35342.4272369627. The cubic root of 1249087163 is about 1076.9550614665.

The spelling of 1249087163 in words is "one billion, two hundred forty-nine million, eighty-seven thousand, one hundred sixty-three".