1260799888 has 10 divisors (see below), whose sum is σ = 2442799814. Its totient is φ = 630399936.

The previous prime is 1260799879. The next prime is 1260799907. The reversal of 1260799888 is 8889970621.

It can be written as a sum of positive squares in only one way, i.e., 1096139664 + 164660224 = 33108^2 + 12832^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39399981 + ... + 39400012.

Almost surely, 2^1260799888 is an apocalyptic number.

It is an amenable number.

1260799888 is a deficient number, since it is larger than the sum of its proper divisors (1181999926).

1260799888 is an equidigital number, since it uses as much as digits as its factorization.

1260799888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78800001 (or 78799995 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 58.

The square root of 1260799888 is about 35507.7440567547. The cubic root of 1260799888 is about 1080.3108067510.

The spelling of 1260799888 in words is "one billion, two hundred sixty million, seven hundred ninety-nine thousand, eight hundred eighty-eight".