1249676770 has 16 divisors (see below), whose sum is σ = 2251665720. Its totient is φ = 499371264.

The previous prime is 1249676741. The next prime is 1249676819. The reversal of 1249676770 is 776769421.

It can be written as a sum of positive squares in 4 ways, for example, as 1052807809 + 196868961 = 32447^2 + 14031^2 .

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, 51837 + ... + 72016.

Almost surely, 2^1249676770 is an apocalyptic number.

1249676770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1249676770 is a deficient number, since it is larger than the sum of its proper divisors (1001988950).

1249676770 is a wasteful number, since it uses less digits than its factorization.

1249676770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124869.

The product of its (nonzero) digits is 889056, while the sum is 49.

The square root of 1249676770 is about 35350.7676012841. The cubic root of 1249676770 is about 1077.1244866216.

The spelling of 1249676770 in words is "one billion, two hundred forty-nine million, six hundred seventy-six thousand, seven hundred seventy".