38643061 has 4 divisors (see below), whose sum is σ = 39172492. Its totient is φ = 38113632.

The previous prime is 38643047. The next prime is 38643067. The reversal of 38643061 is 16034683.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20196036 + 18447025 = 4494^2 + 4295^2 .

It is a cyclic number.

It is not a de Polignac number, because 38643061 - 2¹⁵ = 38610293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38643067) 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, 264606 + ... + 264751.

It is an arithmetic number, because the mean of its divisors is an integer number (9793123).

Almost surely, 2^38643061 is an apocalyptic number.

It is an amenable number.

38643061 is a deficient number, since it is larger than the sum of its proper divisors (529431).

38643061 is an equidigital number, since it uses as much as digits as its factorization.

38643061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529430.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 38643061 is about 6216.3543174436. The cubic root of 38643061 is about 338.0833944523.

The spelling of 38643061 in words is "thirty-eight million, six hundred forty-three thousand, sixty-one".