1249796862 has 48 divisors (see below), whose sum is σ = 2829060000. Its totient is φ = 398002176.

The previous prime is 1249796861. The next prime is 1249796879. The reversal of 1249796862 is 2686979421.

1249796862 is a `hidden beast` number, since 1 + 2 + 497 + 96 + 8 + 62 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1249796799 and 1249796808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249796861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 515878 + ... + 518294.

It is an arithmetic number, because the mean of its divisors is an integer number (58938750).

Almost surely, 2^1249796862 is an apocalyptic number.

1249796862 is an abundant number, since it is smaller than the sum of its proper divisors (1579263138).

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

1249796862 is a wasteful number, since it uses less digits than its factorization.

1249796862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3697 (or 3694 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 1249796862 is about 35352.4661374564. The cubic root of 1249796862 is about 1077.1589888475.

It can be divided in two parts, 124979 and 6862, that added together give a triangular number (131841 = T₅₁₃).

The spelling of 1249796862 in words is "one billion, two hundred forty-nine million, seven hundred ninety-six thousand, eight hundred sixty-two".