1813678288380 has 1944 divisors, whose sum is σ = 7542591730128. Its totient is φ = 364570730496.

The previous prime is 1813678288379. The next prime is 1813678288381. The reversal of 1813678288380 is 838828763181.

1813678288380 is a `hidden beast` number, since 1 + 81 + 36 + 78 + 2 + 88 + 380 = 666.

It is an interprime number because it is at equal distance from previous prime (1813678288379) and next prime (1813678288381).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813678288381) by changing a digit.

It is a polite number, since it can be written in 647 ways as a sum of consecutive naturals, for example, 24844908024 + ... + 24844908096.

Almost surely, 2^{1813678288380} is an apocalyptic number.

1813678288380 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 1813678288380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3771295865064).

1813678288380 is an abundant number, since it is smaller than the sum of its proper divisors (5728913441748).

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

1813678288380 is a wasteful number, since it uses less digits than its factorization.

1813678288380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 63.

The spelling of 1813678288380 in words is "one trillion, eight hundred thirteen billion, six hundred seventy-eight million, two hundred eighty-eight thousand, three hundred eighty".