2149621646 has 8 divisors (see below), whose sum is σ = 3225104040. Its totient is φ = 1074586968.

The previous prime is 2149621633. The next prime is 2149621693. The reversal of 2149621646 is 6461269412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99656 + ... + 119291.

It is an arithmetic number, because the mean of its divisors is an integer number (403138005).

Almost surely, 2^2149621646 is an apocalyptic number.

2149621646 is a deficient number, since it is larger than the sum of its proper divisors (1075482394).

2149621646 is a wasteful number, since it uses less digits than its factorization.

2149621646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223858.

The product of its digits is 124416, while the sum is 41.

The square root of 2149621646 is about 46364.0124018619. The cubic root of 2149621646 is about 1290.5871665482.

The spelling of 2149621646 in words is "two billion, one hundred forty-nine million, six hundred twenty-one thousand, six hundred forty-six".