11638030450 has 24 divisors (see below), whose sum is σ = 21663496260. Its totient is φ = 4651608000.

The previous prime is 11638030433. The next prime is 11638030457. The reversal of 11638030450 is 5403083611.

It can be written as a sum of positive squares in 6 ways, for example, as 1525917969 + 10112112481 = 39063^2 + 100559^2 .

It is not an unprimeable number, because it can be changed into a prime (11638030457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24405 + ... + 154504.

Almost surely, 2^11638030450 is an apocalyptic number.

11638030450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11638030450 is a deficient number, since it is larger than the sum of its proper divisors (10025465810).

11638030450 is a wasteful number, since it uses less digits than its factorization.

11638030450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180222 (or 180217 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 11638030450 in words is "eleven billion, six hundred thirty-eight million, thirty thousand, four hundred fifty".