2061548899 has 4 divisors (see below), whose sum is σ = 2061895536. Its totient is φ = 2061202264.

The previous prime is 2061548873. The next prime is 2061548917. The reversal of 2061548899 is 9988451602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9988451602 = 2 ⋅4994225801.

It is a cyclic number.

It is not a de Polignac number, because 2061548899 - 2¹⁹ = 2061024611 is a prime.

It is a super-2 number, since 2×2061548899² = 8499967725936224402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2061548999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164239 + ... + 176344.

It is an arithmetic number, because the mean of its divisors is an integer number (515473884).

Almost surely, 2^2061548899 is an apocalyptic number.

2061548899 is a deficient number, since it is larger than the sum of its proper divisors (346637).

2061548899 is an equidigital number, since it uses as much as digits as its factorization.

2061548899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346636.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The square root of 2061548899 is about 45404.2828266233. The cubic root of 2061548899 is about 1272.7151490139.

The spelling of 2061548899 in words is "two billion, sixty-one million, five hundred forty-eight thousand, eight hundred ninety-nine".