1213375893 has 8 divisors (see below), whose sum is σ = 1636012800. Its totient is φ = 799828128.

The previous prime is 1213375883. The next prime is 1213375903. The reversal of 1213375893 is 3985733121.

It is an interprime number because it is at equal distance from previous prime (1213375883) and next prime (1213375903).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1213375893 - 2⁸ = 1213375637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213375873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2271973 + ... + 2272506.

It is an arithmetic number, because the mean of its divisors is an integer number (204501600).

Almost surely, 2^1213375893 is an apocalyptic number.

It is an amenable number.

1213375893 is a deficient number, since it is larger than the sum of its proper divisors (422636907).

1213375893 is an equidigital number, since it uses as much as digits as its factorization.

1213375893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544571.

The product of its digits is 136080, while the sum is 42.

The square root of 1213375893 is about 34833.5455129104. The cubic root of 1213375893 is about 1066.5923245823.

The spelling of 1213375893 in words is "one billion, two hundred thirteen million, three hundred seventy-five thousand, eight hundred ninety-three".