1276680379 has 4 divisors (see below), whose sum is σ = 1374886576. Its totient is φ = 1178474184.

The previous prime is 1276680373. The next prime is 1276680437. The reversal of 1276680379 is 9730866721.

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: 9730866721 = 167 ⋅58268663.

It is a cyclic number.

It is not a de Polignac number, because 1276680379 - 2⁹ = 1276679867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1276680373) 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, 49103079 + ... + 49103104.

It is an arithmetic number, because the mean of its divisors is an integer number (343721644).

Almost surely, 2^1276680379 is an apocalyptic number.

1276680379 is a deficient number, since it is larger than the sum of its proper divisors (98206197).

1276680379 is an equidigital number, since it uses as much as digits as its factorization.

1276680379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98206196.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 1276680379 is about 35730.6644074806. The cubic root of 1276680379 is about 1084.8276051071.

The spelling of 1276680379 in words is "one billion, two hundred seventy-six million, six hundred eighty thousand, three hundred seventy-nine".