2111494401 has 45 divisors (see below), whose sum is σ = 3302851279. Its totient is φ = 1299861888.

The previous prime is 2111494391. The next prime is 2111494409. The reversal of 2111494401 is 1044941112.

The square root of 2111494401 is 45951.

It is a perfect power (a square), and thus also a powerful number.

2111494401 is a `hidden beast` number, since 211 + 1 + 4 + 9 + 440 + 1 = 666.

It can be written as a sum of positive squares in 7 ways, for example, as 2480625 + 2109013776 = 1575^2 + 45924^2 .

It is not a de Polignac number, because 2111494401 - 2¹⁵ = 2111461633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111494409) 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 44 ways as a sum of consecutive naturals, for example, 39839491 + ... + 39839543.

Almost surely, 2^2111494401 is an apocalyptic number.

2111494401 is the 45951-st square number.

2111494401 is the 22976-th centered octagonal number.

It is an amenable number.

2111494401 is a deficient number, since it is larger than the sum of its proper divisors (1191356878).

2111494401 is an frugal number, since it uses more digits than its factorization.

2111494401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The cubic root of 2111494401 is about 1282.9113421260.

The spelling of 2111494401 in words is "two billion, one hundred eleven million, four hundred ninety-four thousand, four hundred one".