1321839147 has 8 divisors (see below), whose sum is σ = 1762689600. Its totient is φ = 881107400.

The previous prime is 1321839109. The next prime is 1321839149. The reversal of 1321839147 is 7419381231.

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

It is a cyclic number.

It is not a de Polignac number, because 1321839147 - 2⁷ = 1321839019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321839149) 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, 772 + ... + 51422.

It is an arithmetic number, because the mean of its divisors is an integer number (220336200).

Almost surely, 2^1321839147 is an apocalyptic number.

1321839147 is a deficient number, since it is larger than the sum of its proper divisors (440850453).

1321839147 is an equidigital number, since it uses as much as digits as its factorization.

1321839147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59353.

The product of its digits is 36288, while the sum is 39.

The square root of 1321839147 is about 36357.1058666666. The cubic root of 1321839147 is about 1097.4705369640.

The spelling of 1321839147 in words is "one billion, three hundred twenty-one million, eight hundred thirty-nine thousand, one hundred forty-seven".