387148805381 has 8 divisors (see below), whose sum is σ = 423996084960. Its totient is φ = 351311040432.

The previous prime is 387148805377. The next prime is 387148805383. The reversal of 387148805381 is 183508841783.

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

It is a cyclic number.

It is not a de Polignac number, because 387148805381 - 2² = 387148805377 is a prime.

It is a super-2 number, since 2×387148805381² (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 (387148805383) 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, 252377855 + ... + 252379388.

It is an arithmetic number, because the mean of its divisors is an integer number (52999510620).

Almost surely, 2^387148805381 is an apocalyptic number.

It is an amenable number.

387148805381 is a deficient number, since it is larger than the sum of its proper divisors (36847279579).

387148805381 is a wasteful number, since it uses less digits than its factorization.

387148805381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504757315.

The product of its (nonzero) digits is 5160960, while the sum is 56.

The spelling of 387148805381 in words is "three hundred eighty-seven billion, one hundred forty-eight million, eight hundred five thousand, three hundred eighty-one".