2043377749 has 4 divisors (see below), whose sum is σ = 2335288864. Its totient is φ = 1751466636.

The previous prime is 2043377737. The next prime is 2043377771. The reversal of 2043377749 is 9477733402.

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: 9477733402 = 2 ⋅4738866701.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2043377749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2043377699 and 2043377708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043377779) 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, 145955547 + ... + 145955560.

It is an arithmetic number, because the mean of its divisors is an integer number (583822216).

Almost surely, 2^2043377749 is an apocalyptic number.

It is an amenable number.

2043377749 is a deficient number, since it is larger than the sum of its proper divisors (291911115).

2043377749 is an equidigital number, since it uses as much as digits as its factorization.

2043377749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291911114.

The product of its (nonzero) digits is 889056, while the sum is 46.

The square root of 2043377749 is about 45203.7360071045. The cubic root of 2043377749 is about 1268.9647357054.

The spelling of 2043377749 in words is "two billion, forty-three million, three hundred seventy-seven thousand, seven hundred forty-nine".