2045391076 has 9 divisors (see below), whose sum is σ = 3579592681. Its totient is φ = 1022650312.

The previous prime is 2045391013. The next prime is 2045391079. The reversal of 2045391076 is 6701935402.

The square root of 2045391076 is 45226.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 891022500 + 1154368576 = 29850^2 + 33976^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2045391079) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 79146 + ... + 101758.

Almost surely, 2^2045391076 is an apocalyptic number.

2045391076 is the 45226-th square number.

It is an amenable number.

2045391076 is a deficient number, since it is larger than the sum of its proper divisors (1534201605).

2045391076 is an frugal number, since it uses more digits than its factorization.

2045391076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45230 (or 22615 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The cubic root of 2045391076 is about 1269.3813665079.

The spelling of 2045391076 in words is "two billion, forty-five million, three hundred ninety-one thousand, seventy-six".