1300144991 has 4 divisors (see below), whose sum is σ = 1342085184. Its totient is φ = 1258204800.

The previous prime is 1300144987. The next prime is 1300145003. The reversal of 1300144991 is 1994410031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1994410031 = 19 ⋅104968949.

It is a cyclic number.

It is not a de Polignac number, because 1300144991 - 2² = 1300144987 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 (1300143991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20970050 + ... + 20970111.

It is an arithmetic number, because the mean of its divisors is an integer number (335521296).

Almost surely, 2^1300144991 is an apocalyptic number.

1300144991 is a deficient number, since it is larger than the sum of its proper divisors (41940193).

1300144991 is an equidigital number, since it uses as much as digits as its factorization.

1300144991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41940192.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 1300144991 is about 36057.5233619837. The cubic root of 1300144991 is about 1091.4334564618.

The spelling of 1300144991 in words is "one billion, three hundred million, one hundred forty-four thousand, nine hundred ninety-one".