163739101887 has 16 divisors (see below), whose sum is σ = 242590560000. Its totient is φ = 109153050552.

The previous prime is 163739101781. The next prime is 163739101969. The reversal of 163739101887 is 788101937361.

163739101887 is a `hidden beast` number, since 1 + 6 + 373 + 91 + 0 + 188 + 7 = 666.

It is not a de Polignac number, because 163739101887 - 2¹⁸ = 163738839743 is a prime.

It is a super-2 number, since 2×163739101887² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163739101087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321864 + ... + 656562.

It is an arithmetic number, because the mean of its divisors is an integer number (15161910000).

Almost surely, 2^163739101887 is an apocalyptic number.

163739101887 is a deficient number, since it is larger than the sum of its proper divisors (78851458113).

163739101887 is a wasteful number, since it uses less digits than its factorization.

163739101887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352827 (or 352821 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 163739101887 in words is "one hundred sixty-three billion, seven hundred thirty-nine million, one hundred one thousand, eight hundred eighty-seven".