249424970819 has 4 divisors (see below), whose sum is σ = 264097027944. Its totient is φ = 234752913696.

The previous prime is 249424970813. The next prime is 249424970863. The reversal of 249424970819 is 918079424942.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 249424970819 - 2⁸ = 249424970563 is a prime.

It is a super-2 number, since 2×249424970819² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249424970813) 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, 7336028537 + ... + 7336028570.

It is an arithmetic number, because the mean of its divisors is an integer number (66024256986).

Almost surely, 2^249424970819 is an apocalyptic number.

249424970819 is a deficient number, since it is larger than the sum of its proper divisors (14672057125).

249424970819 is a wasteful number, since it uses less digits than its factorization.

249424970819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14672057124.

The product of its (nonzero) digits is 10450944, while the sum is 59.

The spelling of 249424970819 in words is "two hundred forty-nine billion, four hundred twenty-four million, nine hundred seventy thousand, eight hundred nineteen".