1298776144 has 20 divisors (see below), whose sum is σ = 2625787296. Its totient is φ = 621153632.

The previous prime is 1298776133. The next prime is 1298776151. The reversal of 1298776144 is 4416778921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1764274 + ... + 1765009.

Almost surely, 2^1298776144 is an apocalyptic number.

It is an amenable number.

1298776144 is an abundant number, since it is smaller than the sum of its proper divisors (1327011152).

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

1298776144 is a wasteful number, since it uses less digits than its factorization.

1298776144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3529314 (or 3529308 counting only the distinct ones).

The product of its digits is 677376, while the sum is 49.

The square root of 1298776144 is about 36038.5369292373. The cubic root of 1298776144 is about 1091.0502863675.

The spelling of 1298776144 in words is "one billion, two hundred ninety-eight million, seven hundred seventy-six thousand, one hundred forty-four".