2043020149 has 4 divisors (see below), whose sum is σ = 2131847136. Its totient is φ = 1954193164.

The previous prime is 2043020143. The next prime is 2043020153. The reversal of 2043020149 is 9410203402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9410203402 = 2 ⋅4705101701.

It is a cyclic number.

It is not a de Polignac number, because 2043020149 - 2¹¹ = 2043018101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043020143) 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, 44413459 + ... + 44413504.

It is an arithmetic number, because the mean of its divisors is an integer number (532961784).

Almost surely, 2^2043020149 is an apocalyptic number.

It is an amenable number.

2043020149 is a deficient number, since it is larger than the sum of its proper divisors (88826987).

2043020149 is an equidigital number, since it uses as much as digits as its factorization.

2043020149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88826986.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2043020149 is about 45199.7804087586. The cubic root of 2043020149 is about 1268.8907066027.

The spelling of 2043020149 in words is "two billion, forty-three million, twenty thousand, one hundred forty-nine".