1774990947 has 4 divisors (see below), whose sum is σ = 2366654600. Its totient is φ = 1183327296.

The previous prime is 1774990933. The next prime is 1774990949. The reversal of 1774990947 is 7490994771.

1774990947 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1774990947 - 2⁶ = 1774990883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1774990949) 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, 295831822 + ... + 295831827.

It is an arithmetic number, because the mean of its divisors is an integer number (591663650).

Almost surely, 2^1774990947 is an apocalyptic number.

1774990947 is a deficient number, since it is larger than the sum of its proper divisors (591663653).

1774990947 is an equidigital number, since it uses as much as digits as its factorization.

1774990947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591663652.

The product of its (nonzero) digits is 4000752, while the sum is 57.

The square root of 1774990947 is about 42130.6414264013. The cubic root of 1774990947 is about 1210.7803965545.

The spelling of 1774990947 in words is "one billion, seven hundred seventy-four million, nine hundred ninety thousand, nine hundred forty-seven".