1304491378791 has 16 divisors (see below), whose sum is σ = 1847975990400. Its totient is φ = 816189388128.

The previous prime is 1304491378727. The next prime is 1304491378811. The reversal of 1304491378791 is 1978731944031.

It is not a de Polignac number, because 1304491378791 - 2⁶ = 1304491378727 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304491378291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106936956 + ... + 106949153.

It is an arithmetic number, because the mean of its divisors is an integer number (115498499400).

Almost surely, 2^{1304491378791} is an apocalyptic number.

1304491378791 is a deficient number, since it is larger than the sum of its proper divisors (543484611609).

1304491378791 is a wasteful number, since it uses less digits than its factorization.

1304491378791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213886238.

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 1304491378791 in words is "one trillion, three hundred four billion, four hundred ninety-one million, three hundred seventy-eight thousand, seven hundred ninety-one".