1373578847 has 4 divisors (see below), whose sum is σ = 1373659080. Its totient is φ = 1373498616.

The previous prime is 1373578831. The next prime is 1373578849. The reversal of 1373578847 is 7488753731.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7488753731 = 31 ⋅241572701.

It is a cyclic number.

It is not a de Polignac number, because 1373578847 - 2⁴ = 1373578831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373578849) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2972 + ... + 52497.

It is an arithmetic number, because the mean of its divisors is an integer number (343414770).

Almost surely, 2^1373578847 is an apocalyptic number.

1373578847 is a deficient number, since it is larger than the sum of its proper divisors (80233).

1373578847 is an equidigital number, since it uses as much as digits as its factorization.

1373578847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80232.

The product of its digits is 3951360, while the sum is 53.

The square root of 1373578847 is about 37061.8246582653. The cubic root of 1373578847 is about 1111.6068082538.

The spelling of 1373578847 in words is "one billion, three hundred seventy-three million, five hundred seventy-eight thousand, eight hundred forty-seven".