249643130474 has 8 divisors (see below), whose sum is σ = 374467175940. Its totient is φ = 124820738496.

The previous prime is 249643130467. The next prime is 249643130521. The reversal of 249643130474 is 474031346942.

It can be written as a sum of positive squares in 2 ways, for example, as 249643127449 + 3025 = 499643^2 + 55^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83552 + ... + 711524.

Almost surely, 2^249643130474 is an apocalyptic number.

249643130474 is a deficient number, since it is larger than the sum of its proper divisors (124824045466).

249643130474 is a wasteful number, since it uses less digits than its factorization.

249643130474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826744.

The product of its (nonzero) digits is 1741824, while the sum is 47.

The spelling of 249643130474 in words is "two hundred forty-nine billion, six hundred forty-three million, one hundred thirty thousand, four hundred seventy-four".