1260803955 has 16 divisors (see below), whose sum is σ = 2017935360. Its totient is φ = 672212448.

The previous prime is 1260803933. The next prime is 1260803977. The reversal of 1260803955 is 5593080621.

It is an interprime number because it is at equal distance from previous prime (1260803933) and next prime (1260803977).

It is not a de Polignac number, because 1260803955 - 2⁶ = 1260803891 is a prime.

It is a super-2 number, since 2×1260803955² = 3179253225887284050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42016 + ... + 65474.

It is an arithmetic number, because the mean of its divisors is an integer number (126120960).

Almost surely, 2^1260803955 is an apocalyptic number.

1260803955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1260803955 is a deficient number, since it is larger than the sum of its proper divisors (757131405).

1260803955 is a wasteful number, since it uses less digits than its factorization.

1260803955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27050.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 1260803955 is about 35507.8013259058. The cubic root of 1260803955 is about 1080.3119683468.

The spelling of 1260803955 in words is "one billion, two hundred sixty million, eight hundred three thousand, nine hundred fifty-five".