1394801856 has 630 divisors, whose sum is σ = 5378142660. Its totient is φ = 355332096.

The previous prime is 1394801797. The next prime is 1394801899. The reversal of 1394801856 is 6581084931.

1394801856 is a `hidden beast` number, since 1 + 394 + 80 + 185 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 73410615 + ... + 73410633.

Almost surely, 2^1394801856 is an apocalyptic number.

1394801856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1394801856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2689071330).

1394801856 is an abundant number, since it is smaller than the sum of its proper divisors (3983340804).

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

1394801856 is a wasteful number, since it uses less digits than its factorization.

1394801856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 1394801856 is about 37347.0461482565. The cubic root of 1394801856 is about 1117.3026758480.

The spelling of 1394801856 in words is "one billion, three hundred ninety-four million, eight hundred one thousand, eight hundred fifty-six".