1669547492 has 12 divisors (see below), whose sum is σ = 3093573420. Its totient is φ = 785669376.

The previous prime is 1669547431. The next prime is 1669547513. The reversal of 1669547492 is 2947459661.

It can be written as a sum of positive squares in 2 ways, for example, as 1569427456 + 100120036 = 39616^2 + 10006^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12276017 + ... + 12276152.

It is an arithmetic number, because the mean of its divisors is an integer number (257797785).

Almost surely, 2^1669547492 is an apocalyptic number.

It is an amenable number.

1669547492 is a deficient number, since it is larger than the sum of its proper divisors (1424025928).

1669547492 is a wasteful number, since it uses less digits than its factorization.

1669547492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24552190 (or 24552188 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 53.

The square root of 1669547492 is about 40860.0965735521. The cubic root of 1669547492 is about 1186.3138275074.

The spelling of 1669547492 in words is "one billion, six hundred sixty-nine million, five hundred forty-seven thousand, four hundred ninety-two".