1395843880 has 32 divisors (see below), whose sum is σ = 3142499040. Its totient is φ = 558008640.

The previous prime is 1395843859. The next prime is 1395843901. The reversal of 1395843880 is 883485931.

It is an interprime number because it is at equal distance from previous prime (1395843859) and next prime (1395843901).

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, 65335 + ... + 84025.

It is an arithmetic number, because the mean of its divisors is an integer number (98203095).

Almost surely, 2^1395843880 is an apocalyptic number.

1395843880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1395843880 is an abundant number, since it is smaller than the sum of its proper divisors (1746655160).

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

1395843880 is a wasteful number, since it uses less digits than its factorization.

1395843880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20569 (or 20565 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

The square root of 1395843880 is about 37360.9940981232. The cubic root of 1395843880 is about 1117.5808435292.

The spelling of 1395843880 in words is "one billion, three hundred ninety-five million, eight hundred forty-three thousand, eight hundred eighty".