1641264052 has 12 divisors (see below), whose sum is σ = 2872589860. Its totient is φ = 820524096.

The previous prime is 1641264047. The next prime is 1641264101. The reversal of 1641264052 is 2504621461.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 655052836 + 986211216 = 25594^2 + 31404^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14224 + ... + 59032.

Almost surely, 2^1641264052 is an apocalyptic number.

It is an amenable number.

1641264052 is a deficient number, since it is larger than the sum of its proper divisors (1231325808).

1641264052 is a wasteful number, since it uses less digits than its factorization.

1641264052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53970 (or 53968 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1641264052 is about 40512.5172261611. The cubic root of 1641264052 is about 1179.5766105287.

The spelling of 1641264052 in words is "one billion, six hundred forty-one million, two hundred sixty-four thousand, fifty-two".