1375395820 has 24 divisors (see below), whose sum is σ = 2966395824. Its totient is φ = 535288896.

The previous prime is 1375395797. The next prime is 1375395823. The reversal of 1375395820 is 285935731.

It is not an unprimeable number, because it can be changed into a prime (1375395823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928582 + ... + 930061.

It is an arithmetic number, because the mean of its divisors is an integer number (123599826).

Almost surely, 2^1375395820 is an apocalyptic number.

1375395820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1375395820 is an abundant number, since it is smaller than the sum of its proper divisors (1591000004).

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

1375395820 is a wasteful number, since it uses less digits than its factorization.

1375395820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858689 (or 1858687 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 1375395820 is about 37086.3292872185. The cubic root of 1375395820 is about 1112.0967375687.

The spelling of 1375395820 in words is "one billion, three hundred seventy-five million, three hundred ninety-five thousand, eight hundred twenty".