387263380643 has 4 divisors (see below), whose sum is σ = 389639229768. Its totient is φ = 384887531520.

The previous prime is 387263380639. The next prime is 387263380663. The reversal of 387263380643 is 346083362783.

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

It is a cyclic number.

It is not a de Polignac number, because 387263380643 - 2² = 387263380639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387263380613) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1187924318 + ... + 1187924643.

It is an arithmetic number, because the mean of its divisors is an integer number (97409807442).

Almost surely, 2^387263380643 is an apocalyptic number.

387263380643 is a deficient number, since it is larger than the sum of its proper divisors (2375849125).

387263380643 is a wasteful number, since it uses less digits than its factorization.

387263380643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375849124.

The product of its (nonzero) digits is 10450944, while the sum is 53.

The spelling of 387263380643 in words is "three hundred eighty-seven billion, two hundred sixty-three million, three hundred eighty thousand, six hundred forty-three".