1395681798 has 24 divisors (see below), whose sum is σ = 3247097112. Its totient is φ = 398766144.

The previous prime is 1395681761. The next prime is 1395681799. The reversal of 1395681798 is 8971865931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395681799) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2373315 + ... + 2373902.

It is an arithmetic number, because the mean of its divisors is an integer number (135295713).

Almost surely, 2^1395681798 is an apocalyptic number.

1395681798 is an abundant number, since it is smaller than the sum of its proper divisors (1851415314).

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

1395681798 is a wasteful number, since it uses less digits than its factorization.

1395681798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4747236 (or 4747229 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 57.

The square root of 1395681798 is about 37358.8249012198. The cubic root of 1395681798 is about 1117.5375849307.

The spelling of 1395681798 in words is "one billion, three hundred ninety-five million, six hundred eighty-one thousand, seven hundred ninety-eight".