1301280278 has 4 divisors (see below), whose sum is σ = 1951920420. Its totient is φ = 650640138.

The previous prime is 1301280217. The next prime is 1301280287. The reversal of 1301280278 is 8720821031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8720821031 = 13 ⋅670832387.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325320068 + ... + 325320071.

It is an arithmetic number, because the mean of its divisors is an integer number (487980105).

Almost surely, 2^1301280278 is an apocalyptic number.

1301280278 is a deficient number, since it is larger than the sum of its proper divisors (650640142).

1301280278 is an equidigital number, since it uses as much as digits as its factorization.

1301280278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650640141.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 1301280278 is about 36073.2626470077. The cubic root of 1301280278 is about 1091.7510440489.

The spelling of 1301280278 in words is "one billion, three hundred one million, two hundred eighty thousand, two hundred seventy-eight".