163780011 has 6 divisors (see below), whose sum is σ = 236571140. Its totient is φ = 109186668.

The previous prime is 163780009. The next prime is 163780027. The reversal of 163780011 is 110087361.

163780011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 163780011 - 2¹ = 163780009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163780051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9098881 + ... + 9098898.

Almost surely, 2^163780011 is an apocalyptic number.

163780011 is a deficient number, since it is larger than the sum of its proper divisors (72791129).

163780011 is a wasteful number, since it uses less digits than its factorization.

163780011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18197785 (or 18197782 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 163780011 is about 12797.6564651502. The cubic root of 163780011 is about 547.1255110946.

The spelling of 163780011 in words is "one hundred sixty-three million, seven hundred eighty thousand, eleven".