2111153453 has 4 divisors (see below), whose sum is σ = 2145762588. Its totient is φ = 2076544320.

The previous prime is 2111153431. The next prime is 2111153459. The reversal of 2111153453 is 3543511112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 406949929 + 1704203524 = 20173^2 + 41282^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111153453 - 2¹² = 2111149357 is a prime.

It is a super-2 number, since 2×2111153453² = 8913937804227646418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111153459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17304476 + ... + 17304597.

It is an arithmetic number, because the mean of its divisors is an integer number (536440647).

Almost surely, 2^2111153453 is an apocalyptic number.

It is an amenable number.

2111153453 is a deficient number, since it is larger than the sum of its proper divisors (34609135).

2111153453 is an equidigital number, since it uses as much as digits as its factorization.

2111153453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34609134.

The product of its digits is 1800, while the sum is 26.

The square root of 2111153453 is about 45947.2899418453. The cubic root of 2111153453 is about 1282.8422868318.

Adding to 2111153453 its reverse (3543511112), we get a palindrome (5654664565).

The spelling of 2111153453 in words is "two billion, one hundred eleven million, one hundred fifty-three thousand, four hundred fifty-three".