19780025382 has 48 divisors (see below), whose sum is σ = 46337408208. Its totient is φ = 6061896000.

The previous prime is 19780025381. The next prime is 19780025383. The reversal of 19780025382 is 28352008791.

It is a happy number.

19780025382 is a `hidden beast` number, since 197 + 80 + 0 + 2 + 5 + 382 = 666.

It is an interprime number because it is at equal distance from previous prime (19780025381) and next prime (19780025383).

It is a super-2 number, since 2×19780025382² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19780025381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109653 + ... + 227120.

It is an arithmetic number, because the mean of its divisors is an integer number (965362671).

Almost surely, 2^19780025382 is an apocalyptic number.

19780025382 is an abundant number, since it is smaller than the sum of its proper divisors (26557382826).

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

19780025382 is a wasteful number, since it uses less digits than its factorization.

19780025382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337045 (or 337042 counting only the distinct ones).

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

The spelling of 19780025382 in words is "nineteen billion, seven hundred eighty million, twenty-five thousand, three hundred eighty-two".