3671866545 has 32 divisors (see below), whose sum is σ = 5959446528. Its totient is φ = 1930376448.

The previous prime is 3671866543. The next prime is 3671866591. The reversal of 3671866545 is 5456681763.

It is not a de Polignac number, because 3671866545 - 2¹ = 3671866543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3671866543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292947 + ... + 305223.

It is an arithmetic number, because the mean of its divisors is an integer number (186232704).

Almost surely, 2^3671866545 is an apocalyptic number.

It is an amenable number.

3671866545 is a deficient number, since it is larger than the sum of its proper divisors (2287579983).

3671866545 is a wasteful number, since it uses less digits than its factorization.

3671866545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12569.

The product of its digits is 3628800, while the sum is 51.

The square root of 3671866545 is about 60595.9284523309. The cubic root of 3671866545 is about 1542.7502640604.

The spelling of 3671866545 in words is "three billion, six hundred seventy-one million, eight hundred sixty-six thousand, five hundred forty-five".