2381947742736 has 225 divisors, whose sum is σ = 7065189489501. Its totient is φ = 774740018304.

The previous prime is 2381947742723. The next prime is 2381947742737. The reversal of 2381947742736 is 6372477491832.

The square root of 2381947742736 is 1543356.

It is a perfect power (a square), and thus also a powerful number.

2381947742736 is a `hidden beast` number, since 23 + 8 + 1 + 94 + 77 + 427 + 36 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2050337610000 + 331610132736 = 1431900^2 + 575856^2 .

It is not an unprimeable number, because it can be changed into a prime (2381947742737) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 2389114590 + ... + 2389115586.

Almost surely, 2^{2381947742736} is an apocalyptic number.

2381947742736 is the 1543356-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2381947742736

2381947742736 is an abundant number, since it is smaller than the sum of its proper divisors (4683241746765).

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

2381947742736 is an frugal number, since it uses more digits than its factorization.

2381947742736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100 (or 1045 counting only the distinct ones).

The product of its digits is 85349376, while the sum is 63.

The spelling of 2381947742736 in words is "two trillion, three hundred eighty-one billion, nine hundred forty-seven million, seven hundred forty-two thousand, seven hundred thirty-six".