1207729379938 has 12 divisors (see below), whose sum is σ = 1854703939878. Its totient is φ = 589821323280.

The previous prime is 1207729379887. The next prime is 1207729379953. The reversal of 1207729379938 is 8399739277021.

It can be written as a sum of positive squares in only one way, i.e., 649276573729 + 558452806209 = 805777^2 + 747297^2 .

It is a super-2 number, since 2×1207729379938² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 163291243 + ... + 163298638.

Almost surely, 2^{1207729379938} is an apocalyptic number.

1207729379938 is a deficient number, since it is larger than the sum of its proper divisors (646974559940).

1207729379938 is an equidigital number, since it uses as much as digits as its factorization.

1207729379938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326589969 (or 326589926 counting only the distinct ones).

The product of its (nonzero) digits is 72013536, while the sum is 67.

The spelling of 1207729379938 in words is "one trillion, two hundred seven billion, seven hundred twenty-nine million, three hundred seventy-nine thousand, nine hundred thirty-eight".