1249613916 has 48 divisors (see below), whose sum is σ = 2962729728. Its totient is φ = 409852800.

The previous prime is 1249613903. The next prime is 1249613921. The reversal of 1249613916 is 6193169421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546696 + ... + 548976.

It is an arithmetic number, because the mean of its divisors is an integer number (61723536).

Almost surely, 2^1249613916 is an apocalyptic number.

It is an amenable number.

1249613916 is an abundant number, since it is smaller than the sum of its proper divisors (1713115812).

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

1249613916 is a wasteful number, since it uses less digits than its factorization.

1249613916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002 (or 3000 counting only the distinct ones).

The product of its digits is 69984, while the sum is 42.

The square root of 1249613916 is about 35349.8785853643. The cubic root of 1249613916 is about 1077.1064278939.

The spelling of 1249613916 in words is "one billion, two hundred forty-nine million, six hundred thirteen thousand, nine hundred sixteen".