1391332241 has 16 divisors (see below), whose sum is σ = 1591156224. Its totient is φ = 1205209344.

The previous prime is 1391332223. The next prime is 1391332249. The reversal of 1391332241 is 1422331931.

It is a cyclic number.

It is not a de Polignac number, because 1391332241 - 2¹⁰ = 1391331217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1391332249) 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, 67616 + ... + 85758.

It is an arithmetic number, because the mean of its divisors is an integer number (99447264).

Almost surely, 2^1391332241 is an apocalyptic number.

It is an amenable number.

1391332241 is a deficient number, since it is larger than the sum of its proper divisors (199823983).

1391332241 is a wasteful number, since it uses less digits than its factorization.

1391332241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18520.

The product of its digits is 3888, while the sum is 29.

The square root of 1391332241 is about 37300.5662289462. The cubic root of 1391332241 is about 1116.3754643461.

The spelling of 1391332241 in words is "one billion, three hundred ninety-one million, three hundred thirty-two thousand, two hundred forty-one".