1641392764 has 12 divisors (see below), whose sum is σ = 3133568088. Its totient is φ = 746087600.

The previous prime is 1641392749. The next prime is 1641392783. The reversal of 1641392764 is 4672931461.

It is a self number, because there is not a number n which added to its sum of digits gives 1641392764.

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, 18652147 + ... + 18652234.

It is an arithmetic number, because the mean of its divisors is an integer number (261130674).

Almost surely, 2^1641392764 is an apocalyptic number.

It is an amenable number.

1641392764 is a deficient number, since it is larger than the sum of its proper divisors (1492175324).

1641392764 is a wasteful number, since it uses less digits than its factorization.

1641392764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37304396 (or 37304394 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 1641392764 is about 40514.1057410873. The cubic root of 1641392764 is about 1179.6074448310.

The spelling of 1641392764 in words is "one billion, six hundred forty-one million, three hundred ninety-two thousand, seven hundred sixty-four".