249029942813 has 2 divisors, whose sum is σ = 249029942814. Its totient is φ = 249029942812.

The previous prime is 249029942809. The next prime is 249029942911. The reversal of 249029942813 is 318249920942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191404500004 + 57625442809 = 437498^2 + 240053^2 .

It is a cyclic number.

It is not a de Polignac number, because 249029942813 - 2² = 249029942809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249029902813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124514971406 + 124514971407.

It is an arithmetic number, because the mean of its divisors is an integer number (124514971407).

Almost surely, 2^249029942813 is an apocalyptic number.

It is an amenable number.

249029942813 is a deficient number, since it is larger than the sum of its proper divisors (1).

249029942813 is an equidigital number, since it uses as much as digits as its factorization.

249029942813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 249029942813 in words is "two hundred forty-nine billion, twenty-nine million, nine hundred forty-two thousand, eight hundred thirteen".