387635161 has 4 divisors (see below), whose sum is σ = 387908992. Its totient is φ = 387361332.

The previous prime is 387635159. The next prime is 387635201. The reversal of 387635161 is 161536783.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161536783 = 37 ⋅4365859.

It is a cyclic number.

It is not a de Polignac number, because 387635161 - 2¹ = 387635159 is a prime.

It is a super-3 number, since 3×387635161³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387635761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134781 + ... + 137626.

It is an arithmetic number, because the mean of its divisors is an integer number (96977248).

Almost surely, 2^387635161 is an apocalyptic number.

It is an amenable number.

387635161 is a deficient number, since it is larger than the sum of its proper divisors (273831).

387635161 is a wasteful number, since it uses less digits than its factorization.

387635161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273830.

The product of its digits is 90720, while the sum is 40.

The square root of 387635161 is about 19688.4524785469. The cubic root of 387635161 is about 729.1346228850.

The spelling of 387635161 in words is "three hundred eighty-seven million, six hundred thirty-five thousand, one hundred sixty-one".