1375009540 has 96 divisors (see below), whose sum is σ = 3058804224. Its totient is φ = 518607360.

The previous prime is 1375009513. The next prime is 1375009541. The reversal of 1375009540 is 459005731.

It is a junction number, because it is equal to n+sod(n) for n = 1375009496 and 1375009505.

It is not an unprimeable number, because it can be changed into a prime (1375009541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3746437 + ... + 3746803.

It is an arithmetic number, because the mean of its divisors is an integer number (31862544).

Almost surely, 2^1375009540 is an apocalyptic number.

1375009540 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 1375009540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1529402112).

1375009540 is an abundant number, since it is smaller than the sum of its proper divisors (1683794684).

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

1375009540 is a wasteful number, since it uses less digits than its factorization.

1375009540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 1375009540 is about 37081.1210725889. The cubic root of 1375009540 is about 1111.9926170084.

The spelling of 1375009540 in words is "one billion, three hundred seventy-five million, nine thousand, five hundred forty".