387540687642 has 16 divisors (see below), whose sum is σ = 775107976032. Its totient is φ = 129175795760.

The previous prime is 387540687571. The next prime is 387540687649. The reversal of 387540687642 is 246786045783.

It is a happy number.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (387540687649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916413 + ... + 1270784.

It is an arithmetic number, because the mean of its divisors is an integer number (48444248502).

Almost surely, 2^387540687642 is an apocalyptic number.

387540687642 is an abundant number, since it is smaller than the sum of its proper divisors (387567288390).

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

387540687642 is a wasteful number, since it uses less digits than its factorization.

387540687642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216733.

The product of its (nonzero) digits is 54190080, while the sum is 60.

The spelling of 387540687642 in words is "three hundred eighty-seven billion, five hundred forty million, six hundred eighty-seven thousand, six hundred forty-two".