638622094 has 16 divisors (see below), whose sum is σ = 1090454400. Its totient is φ = 277661560.

The previous prime is 638622073. The next prime is 638622107. The reversal of 638622094 is 490226836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630544 + ... + 631555.

It is an arithmetic number, because the mean of its divisors is an integer number (68153400).

Almost surely, 2^638622094 is an apocalyptic number.

638622094 is a deficient number, since it is larger than the sum of its proper divisors (451832306).

638622094 is a wasteful number, since it uses less digits than its factorization.

638622094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262135.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 638622094 is about 25270.9733488839. The cubic root of 638622094 is about 861.1549715362.

It can be divided in two parts, 63862 and 2094, that added together give a palindrome (65956).

The spelling of 638622094 in words is "six hundred thirty-eight million, six hundred twenty-two thousand, ninety-four".