1911397055 has 8 divisors (see below), whose sum is σ = 2414396400. Its totient is φ = 1448637696.

The previous prime is 1911397049. The next prime is 1911397063. The reversal of 1911397055 is 5507931191.

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

It is a cyclic number.

It is not a de Polignac number, because 1911397055 - 2¹⁰ = 1911396031 is a prime.

It is a congruent number.

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, 10059890 + ... + 10060079.

It is an arithmetic number, because the mean of its divisors is an integer number (301799550).

Almost surely, 2^1911397055 is an apocalyptic number.

1911397055 is a deficient number, since it is larger than the sum of its proper divisors (502999345).

1911397055 is a wasteful number, since it uses less digits than its factorization.

1911397055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20119993.

The product of its (nonzero) digits is 42525, while the sum is 41.

The square root of 1911397055 is about 43719.5271589252. The cubic root of 1911397055 is about 1241.0338791113.

The spelling of 1911397055 in words is "one billion, nine hundred eleven million, three hundred ninety-seven thousand, fifty-five".