1261827848 has 36 divisors (see below), whose sum is σ = 2500786845. Its totient is φ = 596803680.

The previous prime is 1261827821. The next prime is 1261827871. The reversal of 1261827848 is 8487281621.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1141223524 + 120604324 = 33782^2 + 10982^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=25118.

It is a super-2 number, since 2×1261827848² = 3184419035976622208, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1908638 + ... + 1909298.

Almost surely, 2^1261827848 is an apocalyptic number.

It is an amenable number.

1261827848 is a deficient number, since it is larger than the sum of its proper divisors (1238958997).

1261827848 is an frugal number, since it uses more digits than its factorization.

1261827848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366 (or 682 counting only the distinct ones).

The product of its digits is 344064, while the sum is 47.

The square root of 1261827848 is about 35522.2162596874. The cubic root of 1261827848 is about 1080.6043279868.

The spelling of 1261827848 in words is "one billion, two hundred sixty-one million, eight hundred twenty-seven thousand, eight hundred forty-eight".