2045537777 has 4 divisors (see below), whose sum is σ = 2153197680. Its totient is φ = 1937877876.

The previous prime is 2045537723. The next prime is 2045537779. The reversal of 2045537777 is 7777355402.

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.

It is a cyclic number.

It is not a de Polignac number, because 2045537777 - 2⁸ = 2045537521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2045537779) 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, 53829923 + ... + 53829960.

It is an arithmetic number, because the mean of its divisors is an integer number (538299420).

Almost surely, 2^2045537777 is an apocalyptic number.

It is an amenable number.

2045537777 is a deficient number, since it is larger than the sum of its proper divisors (107659903).

2045537777 is a wasteful number, since it uses less digits than its factorization.

2045537777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107659902.

The product of its (nonzero) digits is 1440600, while the sum is 47.

The square root of 2045537777 is about 45227.6218366608. The cubic root of 2045537777 is about 1269.4117136081.

The spelling of 2045537777 in words is "two billion, forty-five million, five hundred thirty-seven thousand, seven hundred seventy-seven".