1375406540 has 12 divisors (see below), whose sum is σ = 2888353776. Its totient is φ = 550162608.

The previous prime is 1375406503. The next prime is 1375406563. The reversal of 1375406540 is 456045731.

It is a self number, because there is not a number n which added to its sum of digits gives 1375406540.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34385144 + ... + 34385183.

It is an arithmetic number, because the mean of its divisors is an integer number (240696148).

Almost surely, 2^1375406540 is an apocalyptic number.

1375406540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1375406540 is an abundant number, since it is smaller than the sum of its proper divisors (1512947236).

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

1375406540 is a wasteful number, since it uses less digits than its factorization.

1375406540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68770336 (or 68770334 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 1375406540 is about 37086.4738145864. The cubic root of 1375406540 is about 1112.0996268329.

The spelling of 1375406540 in words is "one billion, three hundred seventy-five million, four hundred six thousand, five hundred forty".