626948138 has 8 divisors (see below), whose sum is σ = 963359460. Its totient is φ = 305828320.

The previous prime is 626948131. The next prime is 626948143. The reversal of 626948138 is 831849626.

626948138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 620358649 + 6589489 = 24907^2 + 2567^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 626948092 and 626948101.

It is not an unprimeable number, because it can be changed into a prime (626948131) 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, 3822773 + ... + 3822936.

Almost surely, 2^626948138 is an apocalyptic number.

626948138 is a deficient number, since it is larger than the sum of its proper divisors (336411322).

626948138 is a wasteful number, since it uses less digits than its factorization.

626948138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7645752.

The product of its digits is 497664, while the sum is 47.

The square root of 626948138 is about 25038.9324452941. The cubic root of 626948138 is about 855.8753903758.

The spelling of 626948138 in words is "six hundred twenty-six million, nine hundred forty-eight thousand, one hundred thirty-eight".