387974670516 has 18 divisors (see below), whose sum is σ = 980713750562. Its totient is φ = 129324890160.

The previous prime is 387974670491. The next prime is 387974670521. The reversal of 387974670516 is 615076479783.

387974670516 is a `hidden beast` number, since 3 + 8 + 7 + 9 + 7 + 46 + 70 + 516 = 666.

It can be written as a sum of positive squares in only one way, i.e., 259060640400 + 128914030116 = 508980^2 + 359046^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5388537055 + ... + 5388537126.

Almost surely, 2^387974670516 is an apocalyptic number.

387974670516 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

387974670516 is an abundant number, since it is smaller than the sum of its proper divisors (592739080046).

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

387974670516 is a wasteful number, since it uses less digits than its factorization.

387974670516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10777074191 (or 10777074186 counting only the distinct ones).

The product of its (nonzero) digits is 53343360, while the sum is 63.

The spelling of 387974670516 in words is "three hundred eighty-seven billion, nine hundred seventy-four million, six hundred seventy thousand, five hundred sixteen".