387640290130 has 8 divisors (see below), whose sum is σ = 697752522252. Its totient is φ = 155056116048.

The previous prime is 387640290077. The next prime is 387640290223. The reversal of 387640290130 is 31092046783.

It can be written as a sum of positive squares in 2 ways, for example, as 352419135201 + 35221154929 = 593649^2 + 187673^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19382014497 + ... + 19382014516.

Almost surely, 2^387640290130 is an apocalyptic number.

387640290130 is a deficient number, since it is larger than the sum of its proper divisors (310112232122).

387640290130 is a wasteful number, since it uses less digits than its factorization.

387640290130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38764029020.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 387640290130 in words is "three hundred eighty-seven billion, six hundred forty million, two hundred ninety thousand, one hundred thirty".