1269148768 has 48 divisors (see below), whose sum is σ = 2572970400. Its totient is φ = 615859200.

The previous prime is 1269148739. The next prime is 1269148781. The reversal of 1269148768 is 8678419621.

It is a super-2 number, since 2×1269148768² = 3221477190631835648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258658 + ... + 263518.

It is an arithmetic number, because the mean of its divisors is an integer number (53603550).

Almost surely, 2^1269148768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1269148768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1286485200).

1269148768 is an abundant number, since it is smaller than the sum of its proper divisors (1303821632).

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

1269148768 is a wasteful number, since it uses less digits than its factorization.

1269148768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111 (or 5103 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 52.

The square root of 1269148768 is about 35625.1142875360. The cubic root of 1269148768 is about 1082.6901295467.

The spelling of 1269148768 in words is "one billion, two hundred sixty-nine million, one hundred forty-eight thousand, seven hundred sixty-eight".