1204013391 has 8 divisors (see below), whose sum is σ = 1834687104. Its totient is φ = 688007640.

The previous prime is 1204013381. The next prime is 1204013399. The reversal of 1204013391 is 1933104021.

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

It is not a de Polignac number, because 1204013391 - 2⁵ = 1204013359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204013399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28666965 + ... + 28667006.

It is an arithmetic number, because the mean of its divisors is an integer number (229335888).

Almost surely, 2^1204013391 is an apocalyptic number.

1204013391 is a deficient number, since it is larger than the sum of its proper divisors (630673713).

1204013391 is an equidigital number, since it uses as much as digits as its factorization.

1204013391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57333981.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1204013391 is about 34698.8961063605. The cubic root of 1204013391 is about 1063.8419354465.

The spelling of 1204013391 in words is "one billion, two hundred four million, thirteen thousand, three hundred ninety-one".