1249163424 has 96 divisors (see below), whose sum is σ = 3649645440. Its totient is φ = 415673856.

The previous prime is 1249163387. The next prime is 1249163437. The reversal of 1249163424 is 4243619421.

1249163424 is a `hidden beast` number, since 12 + 4 + 9 + 1 + 634 + 2 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 808797 + ... + 810339.

It is an arithmetic number, because the mean of its divisors is an integer number (38017140).

Almost surely, 2^1249163424 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 1249163424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1824822720).

1249163424 is an abundant number, since it is smaller than the sum of its proper divisors (2400482016).

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

1249163424 is a wasteful number, since it uses less digits than its factorization.

1249163424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499 (or 2485 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 1249163424 is about 35343.5061079118. The cubic root of 1249163424 is about 1076.9769782713.

The spelling of 1249163424 in words is "one billion, two hundred forty-nine million, one hundred sixty-three thousand, four hundred twenty-four".