1278963 has 32 divisors (see below), whose sum is σ = 2219520. Its totient is φ = 712800.

The previous prime is 1278911. The next prime is 1278983. The reversal of 1278963 is 3698721.

It is not a de Polignac number, because 1278963 - 2⁶ = 1278899 is a prime.

It is an alternating number because its digits alternate between odd and even.

1278963 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1278983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12613 + ... + 12713.

It is an arithmetic number, because the mean of its divisors is an integer number (69360).

2^1278963 is an apocalyptic number.

1278963 is a deficient number, since it is larger than the sum of its proper divisors (940557).

1278963 is a wasteful number, since it uses less digits than its factorization.

1278963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 178 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 1278963 is about 1130.9124634559. The cubic root of 1278963 is about 108.5473753766.

The spelling of 1278963 in words is "one million, two hundred seventy-eight thousand, nine hundred sixty-three".