1299916553 has 32 divisors (see below), whose sum is σ = 1502032896. Its totient is φ = 1115693568.

The previous prime is 1299916549. The next prime is 1299916573. The reversal of 1299916553 is 3556199921.

It is not a de Polignac number, because 1299916553 - 2² = 1299916549 is a prime.

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

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3274151 + ... + 3274547.

It is an arithmetic number, because the mean of its divisors is an integer number (46938528).

Almost surely, 2^1299916553 is an apocalyptic number.

1299916553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1299916553 is a deficient number, since it is larger than the sum of its proper divisors (202116343).

1299916553 is a wasteful number, since it uses less digits than its factorization.

1299916553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713.

The product of its digits is 656100, while the sum is 50.

The square root of 1299916553 is about 36054.3555343872. The cubic root of 1299916553 is about 1091.3695303917.

The spelling of 1299916553 in words is "one billion, two hundred ninety-nine million, nine hundred sixteen thousand, five hundred fifty-three".