1385809927488 has 336 divisors, whose sum is σ = 4691040347136. Its totient is φ = 382766653440.

The previous prime is 1385809927441. The next prime is 1385809927499. The reversal of 1385809927488 is 8847299085831.

1385809927488 is a `hidden beast` number, since 1 + 3 + 8 + 58 + 0 + 9 + 92 + 7 + 488 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129111370 + ... + 129122102.

Almost surely, 2^{1385809927488} is an apocalyptic number.

1385809927488 is a gapful number since it is divisible by the number (18) 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 1385809927488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2345520173568).

1385809927488 is an abundant number, since it is smaller than the sum of its proper divisors (3305230419648).

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

1385809927488 is a wasteful number, since it uses less digits than its factorization.

1385809927488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11822 (or 11809 counting only the distinct ones).

The product of its (nonzero) digits is 278691840, while the sum is 72.

The spelling of 1385809927488 in words is "one trillion, three hundred eighty-five billion, eight hundred nine million, nine hundred twenty-seven thousand, four hundred eighty-eight".