1375309128 has 32 divisors (see below), whose sum is σ = 3458871360. Its totient is φ = 455689920.

The previous prime is 1375309109. The next prime is 1375309147. The reversal of 1375309128 is 8219035731.

It is an interprime number because it is at equal distance from previous prime (1375309109) and next prime (1375309147).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167563 + ... + 175578.

It is an arithmetic number, because the mean of its divisors is an integer number (108089730).

Almost surely, 2^1375309128 is an apocalyptic number.

It is an amenable number.

1375309128 is an abundant number, since it is smaller than the sum of its proper divisors (2083562232).

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

1375309128 is a wasteful number, since it uses less digits than its factorization.

1375309128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343317 (or 343313 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 1375309128 is about 37085.1604823277. The cubic root of 1375309128 is about 1112.0733717093.

The spelling of 1375309128 in words is "one billion, three hundred seventy-five million, three hundred nine thousand, one hundred twenty-eight".