1281957714 has 12 divisors (see below), whose sum is σ = 2777575086. Its totient is φ = 427319232.

The previous prime is 1281957713. The next prime is 1281957737. The reversal of 1281957714 is 4177591821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1267004025 + 14953689 = 35595^2 + 3867^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1281957714.

It is not an unprimeable number, because it can be changed into a prime (1281957713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35609919 + ... + 35609954.

Almost surely, 2^1281957714 is an apocalyptic number.

1281957714 is an abundant number, since it is smaller than the sum of its proper divisors (1495617372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1281957714 is a wasteful number, since it uses less digits than its factorization.

1281957714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71219881 (or 71219878 counting only the distinct ones).

The product of its digits is 141120, while the sum is 45.

The square root of 1281957714 is about 35804.4370714022. The cubic root of 1281957714 is about 1086.3203118933.

The spelling of 1281957714 in words is "one billion, two hundred eighty-one million, nine hundred fifty-seven thousand, seven hundred fourteen".