1301664139 has 4 divisors (see below), whose sum is σ = 1358258256. Its totient is φ = 1245070024.

The previous prime is 1301664131. The next prime is 1301664197. The reversal of 1301664139 is 9314661031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9314661031 = 13 ⋅716512387.

It is a cyclic number.

It is not a de Polignac number, because 1301664139 - 2³ = 1301664131 is a prime.

It is a super-2 number, since 2×1301664139² = 3388659061517222642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1301664131) 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, 28297024 + ... + 28297069.

It is an arithmetic number, because the mean of its divisors is an integer number (339564564).

Almost surely, 2^1301664139 is an apocalyptic number.

1301664139 is a deficient number, since it is larger than the sum of its proper divisors (56594117).

1301664139 is an equidigital number, since it uses as much as digits as its factorization.

1301664139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56594116.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 1301664139 is about 36078.5828297066. The cubic root of 1301664139 is about 1091.8583843489.

The spelling of 1301664139 in words is "one billion, three hundred one million, six hundred sixty-four thousand, one hundred thirty-nine".