361645871 has 16 divisors (see below), whose sum is σ = 385596288. Its totient is φ = 338707200.

The previous prime is 361645861. The next prime is 361645873. The reversal of 361645871 is 178546163.

It is a cyclic number.

It is not a de Polignac number, because 361645871 - 2¹⁴ = 361629487 is a prime.

It is a super-3 number, since 3×361645871³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361645873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100361 + ... + 103901.

It is an arithmetic number, because the mean of its divisors is an integer number (24099768).

Almost surely, 2^361645871 is an apocalyptic number.

361645871 is a deficient number, since it is larger than the sum of its proper divisors (23950417).

361645871 is a wasteful number, since it uses less digits than its factorization.

361645871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3682.

The product of its digits is 120960, while the sum is 41.

The square root of 361645871 is about 19016.9890098301. The cubic root of 361645871 is about 712.4611217526.

The spelling of 361645871 in words is "three hundred sixty-one million, six hundred forty-five thousand, eight hundred seventy-one".