1375395840 has 672 divisors, whose sum is σ = 6011119296. Its totient is φ = 283115520.

The previous prime is 1375395823. The next prime is 1375395841. The reversal of 1375395840 is 485935731.

1375395840 is a `hidden beast` number, since 1 + 37 + 5 + 39 + 584 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375395841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33546220 + ... + 33546260.

It is an arithmetic number, because the mean of its divisors is an integer number (8945118).

Almost surely, 2^1375395840 is an apocalyptic number.

1375395840 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 1375395840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3005559648).

1375395840 is an abundant number, since it is smaller than the sum of its proper divisors (4635723456).

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

1375395840 is a wasteful number, since it uses less digits than its factorization.

1375395840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 1375395840 is about 37086.3295568596. The cubic root of 1375395840 is about 1112.0967429591.

The spelling of 1375395840 in words is "one billion, three hundred seventy-five million, three hundred ninety-five thousand, eight hundred forty".