249388000013 has 4 divisors (see below), whose sum is σ = 249422881728. Its totient is φ = 249353118300.

The previous prime is 249387999997. The next prime is 249388000051. The reversal of 249388000013 is 310000883942.

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.

It is a cyclic number.

It is not a de Polignac number, because 249388000013 - 2⁴ = 249387999997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249388002013) 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, 17430131 + ... + 17444432.

It is an arithmetic number, because the mean of its divisors is an integer number (62355720432).

Almost surely, 2^249388000013 is an apocalyptic number.

It is an amenable number.

249388000013 is a deficient number, since it is larger than the sum of its proper divisors (34881715).

249388000013 is an equidigital number, since it uses as much as digits as its factorization.

249388000013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34881714.

The product of its (nonzero) digits is 41472, while the sum is 38.

Adding to 249388000013 its reverse (310000883942), we get a palindrome (559388883955).

The spelling of 249388000013 in words is "two hundred forty-nine billion, three hundred eighty-eight million, thirteen", and thus it is an aban number.