1395202878 has 12 divisors (see below), whose sum is σ = 3022939608. Its totient is φ = 465067620.

The previous prime is 1395202873. The next prime is 1395202933. The reversal of 1395202878 is 8782025931.

It is a happy number.

1395202878 is a `hidden beast` number, since 1 + 39 + 520 + 28 + 78 = 666.

1395202878 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395202871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38755618 + ... + 38755653.

It is an arithmetic number, because the mean of its divisors is an integer number (251911634).

Almost surely, 2^1395202878 is an apocalyptic number.

1395202878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1395202878 is an abundant number, since it is smaller than the sum of its proper divisors (1627736730).

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

1395202878 is a wasteful number, since it uses less digits than its factorization.

1395202878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77511279 (or 77511276 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1395202878 is about 37352.4146207444. The cubic root of 1395202878 is about 1117.4097448240.

The spelling of 1395202878 in words is "one billion, three hundred ninety-five million, two hundred two thousand, eight hundred seventy-eight".