1384781979240 has 192 divisors, whose sum is σ = 4917141028800. Its totient is φ = 335194675200.

The previous prime is 1384781979239. The next prime is 1384781979241. The reversal of 1384781979240 is 429791874831.

1384781979240 is a `hidden beast` number, since 1 + 38 + 478 + 1 + 9 + 7 + 92 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (1384781979239) and next prime (1384781979241).

It is a super-2 number, since 2×1384781979240² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1384781979241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2344320 + ... + 2874960.

It is an arithmetic number, because the mean of its divisors is an integer number (25610109525).

Almost surely, 2^{1384781979240} is an apocalyptic number.

1384781979240 is a gapful number since it is divisible by the number (10) 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 1384781979240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2458570514400).

1384781979240 is an abundant number, since it is smaller than the sum of its proper divisors (3532359049560).

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

1384781979240 is a wasteful number, since it uses less digits than its factorization.

1384781979240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531328 (or 531321 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 1384781979240 in words is "one trillion, three hundred eighty-four billion, seven hundred eighty-one million, nine hundred seventy-nine thousand, two hundred forty".