1243925316 has 96 divisors (see below), whose sum is σ = 3289036800. Its totient is φ = 406490400.

The previous prime is 1243925299. The next prime is 1243925323. The reversal of 1243925316 is 6135293421.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1353105 + ... + 1354023.

It is an arithmetic number, because the mean of its divisors is an integer number (34260800).

Almost surely, 2^1243925316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243925316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1644518400).

1243925316 is an abundant number, since it is smaller than the sum of its proper divisors (2045111484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243925316 is a wasteful number, since it uses less digits than its factorization.

1243925316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166 (or 1158 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 1243925316 is about 35269.3254259278. The cubic root of 1243925316 is about 1075.4695092788.

The spelling of 1243925316 in words is "one billion, two hundred forty-three million, nine hundred twenty-five thousand, three hundred sixteen".