1207664638 has 8 divisors (see below), whose sum is σ = 1811644632. Its totient is φ = 603783096.

The previous prime is 1207664621. The next prime is 1207664651. The reversal of 1207664638 is 8364667021.

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 = 1207664594 and 1207664603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33456 + ... + 59452.

It is an arithmetic number, because the mean of its divisors is an integer number (226455579).

Almost surely, 2^1207664638 is an apocalyptic number.

1207664638 is a deficient number, since it is larger than the sum of its proper divisors (603979994).

1207664638 is a wasteful number, since it uses less digits than its factorization.

1207664638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49226.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 1207664638 is about 34751.4695804365. The cubic root of 1207664638 is about 1064.9162396012.

The spelling of 1207664638 in words is "one billion, two hundred seven million, six hundred sixty-four thousand, six hundred thirty-eight".