1099019901 has 8 divisors (see below), whose sum is σ = 1674697024. Its totient is φ = 628011360.

The previous prime is 1099019897. The next prime is 1099019947. The reversal of 1099019901 is 1099109901.

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

It is not a de Polignac number, because 1099019901 - 2² = 1099019897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1099019901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099019101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26167120 + ... + 26167161.

It is an arithmetic number, because the mean of its divisors is an integer number (209337128).

Almost surely, 2^1099019901 is an apocalyptic number.

It is an amenable number.

1099019901 is a deficient number, since it is larger than the sum of its proper divisors (575677123).

1099019901 is an equidigital number, since it uses as much as digits as its factorization.

1099019901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52334291.

The product of its (nonzero) digits is 6561, while the sum is 39.

The square root of 1099019901 is about 33151.4690624714. The cubic root of 1099019901 is about 1031.9734374736.

Subtracting 1099019901 from its reverse (1099109901), we obtain a square (90000 = 300²).

The spelling of 1099019901 in words is "one billion, ninety-nine million, nineteen thousand, nine hundred one".