1375732530 has 48 divisors (see below), whose sum is σ = 3586737024. Its totient is φ = 365853600.

The previous prime is 1375732499. The next prime is 1375732597. The reversal of 1375732530 is 352375731.

1375732530 is a `hidden beast` number, since 1 + 37 + 573 + 2 + 53 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12205 + ... + 53855.

It is an arithmetic number, because the mean of its divisors is an integer number (74723688).

Almost surely, 2^1375732530 is an apocalyptic number.

1375732530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1375732530 is an abundant number, since it is smaller than the sum of its proper divisors (2211004494).

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

1375732530 is a wasteful number, since it uses less digits than its factorization.

1375732530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42031 (or 42028 counting only the distinct ones).

The product of its (nonzero) digits is 66150, while the sum is 36.

The square root of 1375732530 is about 37090.8685527853. The cubic root of 1375732530 is about 1112.1874807895.

The spelling of 1375732530 in words is "one billion, three hundred seventy-five million, seven hundred thirty-two thousand, five hundred thirty".