1263947298 has 32 divisors (see below), whose sum is σ = 2663884800. Its totient is φ = 398699856.

The previous prime is 1263947291. The next prime is 1263947369. The reversal of 1263947298 is 8927493621.

It is a self number, because there is not a number n which added to its sum of digits gives 1263947298.

It is not an unprimeable number, because it can be changed into a prime (1263947291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106423 + ... + 117701.

It is an arithmetic number, because the mean of its divisors is an integer number (83246400).

Almost surely, 2^1263947298 is an apocalyptic number.

1263947298 is an abundant number, since it is smaller than the sum of its proper divisors (1399937502).

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

1263947298 is a wasteful number, since it uses less digits than its factorization.

1263947298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12286.

The product of its digits is 1306368, while the sum is 51.

The square root of 1263947298 is about 35552.0364817545. The cubic root of 1263947298 is about 1081.2090078660.

The spelling of 1263947298 in words is "one billion, two hundred sixty-three million, nine hundred forty-seven thousand, two hundred ninety-eight".