1055916999 has 16 divisors (see below), whose sum is σ = 1618264800. Its totient is φ = 679670208.

The previous prime is 1055916949. The next prime is 1055917003. The reversal of 1055916999 is 9996195501.

It is not a de Polignac number, because 1055916999 - 2¹⁵ = 1055884231 is a prime.

It is a super-2 number, since 2×1055916999² = 2229921417554332002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055916919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 673494 + ... + 675059.

It is an arithmetic number, because the mean of its divisors is an integer number (101141550).

Almost surely, 2^1055916999 is an apocalyptic number.

1055916999 is a deficient number, since it is larger than the sum of its proper divisors (562347801).

1055916999 is a wasteful number, since it uses less digits than its factorization.

1055916999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348591 (or 1348585 counting only the distinct ones).

The product of its (nonzero) digits is 984150, while the sum is 54.

The square root of 1055916999 is about 32494.8765038429. The cubic root of 1055916999 is about 1018.3019932145.

The spelling of 1055916999 in words is "one billion, fifty-five million, nine hundred sixteen thousand, nine hundred ninety-nine".