1251068364 has 288 divisors, whose sum is σ = 4091150336. Its totient is φ = 313528320.

The previous prime is 1251068321. The next prime is 1251068393. The reversal of 1251068364 is 4638601521.

It is a happy number.

1251068364 is a `hidden beast` number, since 1 + 2 + 510 + 6 + 83 + 64 = 666.

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 95 ways as a sum of consecutive naturals, for example, 9850869 + ... + 9850995.

Almost surely, 2^1251068364 is an apocalyptic number.

1251068364 is a gapful number since it is divisible by the number (14) 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 1251068364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2045575168).

1251068364 is an abundant number, since it is smaller than the sum of its proper divisors (2840081972).

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

1251068364 is a wasteful number, since it uses less digits than its factorization.

1251068364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1251068364 is about 35370.4447809184. Note that the first 3 decimals coincide. The cubic root of 1251068364 is about 1077.5241536854.

Adding to 1251068364 its reverse (4638601521), we get a palindrome (5889669885).

The spelling of 1251068364 in words is "one billion, two hundred fifty-one million, sixty-eight thousand, three hundred sixty-four".