7638396450 has 48 divisors (see below), whose sum is σ = 18949918080. Its totient is φ = 2036185920.

The previous prime is 7638396419. The next prime is 7638396509. The reversal of 7638396450 is 546938367.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7638396393 and 7638396402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 520311 + ... + 534789.

It is an arithmetic number, because the mean of its divisors is an integer number (394789960).

Almost surely, 2^7638396450 is an apocalyptic number.

7638396450 is an abundant number, since it is smaller than the sum of its proper divisors (11311521630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7638396450 is a wasteful number, since it uses less digits than its factorization.

7638396450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18011 (or 18006 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 51.

The square root of 7638396450 is about 87397.9201697615. The cubic root of 7638396450 is about 1969.4005966696.

The spelling of 7638396450 in words is "seven billion, six hundred thirty-eight million, three hundred ninety-six thousand, four hundred fifty".