622738149 has 8 divisors (see below), whose sum is σ = 905800992. Its totient is φ = 377417040.

The previous prime is 622738139. The next prime is 622738153. The reversal of 622738149 is 941837226.

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

It is not a de Polignac number, because 622738149 - 2⁵ = 622738117 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 622738149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622738139) 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, 9435394 + ... + 9435459.

It is an arithmetic number, because the mean of its divisors is an integer number (113225124).

Almost surely, 2^622738149 is an apocalyptic number.

It is an amenable number.

622738149 is a deficient number, since it is larger than the sum of its proper divisors (283062843).

622738149 is a wasteful number, since it uses less digits than its factorization.

622738149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18870867.

The product of its digits is 145152, while the sum is 42.

The square root of 622738149 is about 24954.7219780145. The cubic root of 622738149 is about 853.9553370964.

The spelling of 622738149 in words is "six hundred twenty-two million, seven hundred thirty-eight thousand, one hundred forty-nine".