2149550686 has 16 divisors (see below), whose sum is σ = 3415067136. Its totient is φ = 1011234816.

The previous prime is 2149550681. The next prime is 2149550701. The reversal of 2149550686 is 6860559412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149550681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126910 + ... + 142846.

It is an arithmetic number, because the mean of its divisors is an integer number (213441696).

Almost surely, 2^2149550686 is an apocalyptic number.

2149550686 is a deficient number, since it is larger than the sum of its proper divisors (1265516450).

2149550686 is a wasteful number, since it uses less digits than its factorization.

2149550686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19923.

The product of its (nonzero) digits is 518400, while the sum is 46.

The square root of 2149550686 is about 46363.2471468511. The cubic root of 2149550686 is about 1290.5729654332.

The spelling of 2149550686 in words is "two billion, one hundred forty-nine million, five hundred fifty thousand, six hundred eighty-six".