1299916570 has 8 divisors (see below), whose sum is σ = 2339849844. Its totient is φ = 519966624.

The previous prime is 1299916549. The next prime is 1299916573. The reversal of 1299916570 is 756199921.

It can be written as a sum of positive squares in 2 ways, for example, as 1069878681 + 230037889 = 32709^2 + 15167^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1299916573) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 64995819 + ... + 64995838.

Almost surely, 2^1299916570 is an apocalyptic number.

1299916570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1299916570 is a deficient number, since it is larger than the sum of its proper divisors (1039933274).

1299916570 is a wasteful number, since it uses less digits than its factorization.

1299916570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129991664.

The product of its (nonzero) digits is 306180, while the sum is 49.

The square root of 1299916570 is about 36054.3557701424. The cubic root of 1299916570 is about 1091.3695351493.

The spelling of 1299916570 in words is "one billion, two hundred ninety-nine million, nine hundred sixteen thousand, five hundred seventy".