249989199530 has 16 divisors (see below), whose sum is σ = 514263496320. Its totient is φ = 85710582672.

The previous prime is 249989199469. The next prime is 249989199547. The reversal of 249989199530 is 35991989942.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1785637070 + ... + 1785637209.

It is an arithmetic number, because the mean of its divisors is an integer number (32141468520).

Almost surely, 2^249989199530 is an apocalyptic number.

249989199530 is an abundant number, since it is smaller than the sum of its proper divisors (264274296790).

249989199530 is a wasteful number, since it uses less digits than its factorization.

249989199530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571274293.

The product of its (nonzero) digits is 56687040, while the sum is 68.

The spelling of 249989199530 in words is "two hundred forty-nine billion, nine hundred eighty-nine million, one hundred ninety-nine thousand, five hundred thirty".