387560108381 has 4 divisors (see below), whose sum is σ = 387561622812. Its totient is φ = 387558593952.

The previous prime is 387560108363. The next prime is 387560108389. The reversal of 387560108381 is 183801065783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 192115656100 + 195444452281 = 438310^2 + 442091^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387560108381 is a prime.

It is a super-2 number, since 2×387560108381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387560108389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267986 + ... + 920291.

It is an arithmetic number, because the mean of its divisors is an integer number (96890405703).

Almost surely, 2^387560108381 is an apocalyptic number.

It is an amenable number.

387560108381 is a deficient number, since it is larger than the sum of its proper divisors (1514431).

387560108381 is a wasteful number, since it uses less digits than its factorization.

387560108381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514430.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 387560108381 in words is "three hundred eighty-seven billion, five hundred sixty million, one hundred eight thousand, three hundred eighty-one".