1213826738270 has 16 divisors (see below), whose sum is σ = 2193954059088. Its totient is φ = 483516044160.

The previous prime is 1213826738251. The next prime is 1213826738279. The reversal of 1213826738270 is 728376283121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213826738279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251828864 + ... + 251833683.

It is an arithmetic number, because the mean of its divisors is an integer number (137122128693).

Almost surely, 2^{1213826738270} is an apocalyptic number.

1213826738270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213826738270 is a deficient number, since it is larger than the sum of its proper divisors (980127320818).

1213826738270 is a wasteful number, since it uses less digits than its factorization.

1213826738270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503662795.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 1213826738270 in words is "one trillion, two hundred thirteen billion, eight hundred twenty-six million, seven hundred thirty-eight thousand, two hundred seventy".