1249164000 has 288 divisors, whose sum is σ = 5067631296. Its totient is φ = 285465600.

The previous prime is 1249163983. The next prime is 1249164011. The reversal of 1249164000 is 4619421.

1249164000 is a `hidden beast` number, since 1 + 249 + 16 + 400 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 249522 + ... + 254478.

It is an arithmetic number, because the mean of its divisors is an integer number (17595942).

Almost surely, 2^1249164000 is an apocalyptic number.

1249164000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1249164000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2533815648).

1249164000 is an abundant number, since it is smaller than the sum of its proper divisors (3818467296).

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

1249164000 is a wasteful number, since it uses less digits than its factorization.

1249164000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4995 (or 4974 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1249164000 is about 35343.5142565082. The cubic root of 1249164000 is about 1076.9771438057.

The spelling of 1249164000 in words is "one billion, two hundred forty-nine million, one hundred sixty-four thousand".