163377387 has 24 divisors (see below), whose sum is σ = 244754640. Its totient is φ = 104892480.

The previous prime is 163377359. The next prime is 163377397. The reversal of 163377387 is 783773361.

163377387 is a `hidden beast` number, since 1 + 633 + 7 + 7 + 3 + 8 + 7 = 666.

It is not a de Polignac number, because 163377387 - 2¹⁰ = 163376363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163377397) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 172048 + ... + 172994.

It is an arithmetic number, because the mean of its divisors is an integer number (10198110).

Almost surely, 2^163377387 is an apocalyptic number.

163377387 is a deficient number, since it is larger than the sum of its proper divisors (81377253).

163377387 is a wasteful number, since it uses less digits than its factorization.

163377387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643 (or 1640 counting only the distinct ones).

The product of its digits is 444528, while the sum is 45.

The square root of 163377387 is about 12781.9164056099. The cubic root of 163377387 is about 546.6768063176.

The spelling of 163377387 in words is "one hundred sixty-three million, three hundred seventy-seven thousand, three hundred eighty-seven".