3867049509 has 4 divisors (see below), whose sum is σ = 5156066016. Its totient is φ = 2578033004.

The previous prime is 3867049493. The next prime is 3867049649. The reversal of 3867049509 is 9059407683.

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.

It is a cyclic number.

It is not a de Polignac number, because 3867049509 - 2⁴ = 3867049493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3867044509) 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, 644508249 + ... + 644508254.

It is an arithmetic number, because the mean of its divisors is an integer number (1289016504).

Almost surely, 2^3867049509 is an apocalyptic number.

It is an amenable number.

3867049509 is a deficient number, since it is larger than the sum of its proper divisors (1289016507).

3867049509 is a wasteful number, since it uses less digits than its factorization.

3867049509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289016506.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The square root of 3867049509 is about 62185.6053198809. The cubic root of 3867049509 is about 1569.6153748328.

The spelling of 3867049509 in words is "three billion, eight hundred sixty-seven million, forty-nine thousand, five hundred nine".