1375001568 has 120 divisors (see below), whose sum is σ = 4076658432. Its totient is φ = 454616064.

The previous prime is 1375001561. The next prime is 1375001603. The reversal of 1375001568 is 8651005731.

1375001568 is a `hidden beast` number, since 137 + 500 + 15 + 6 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375001561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 327096 + ... + 331272.

Almost surely, 2^1375001568 is an apocalyptic number.

1375001568 is a gapful number since it is divisible by the number (18) 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 1375001568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2038329216).

1375001568 is an abundant number, since it is smaller than the sum of its proper divisors (2701656864).

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

1375001568 is a wasteful number, since it uses less digits than its factorization.

1375001568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4326 (or 4309 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 1375001568 is about 37081.0135783800. The cubic root of 1375001568 is about 1111.9904679755.

The spelling of 1375001568 in words is "one billion, three hundred seventy-five million, one thousand, five hundred sixty-eight".