1641263488 has 16 divisors (see below), whose sum is σ = 3269704860. Its totient is φ = 820631680.

The previous prime is 1641263461. The next prime is 1641263527. The reversal of 1641263488 is 8843621461.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×1641263488² = 5387491674083852288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6411058 + ... + 6411313.

Almost surely, 2^1641263488 is an apocalyptic number.

It is an amenable number.

1641263488 is a deficient number, since it is larger than the sum of its proper divisors (1628441372).

1641263488 is an equidigital number, since it uses as much as digits as its factorization.

1641263488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12822385 (or 12822373 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 1641263488 is about 40512.5102653489. The cubic root of 1641263488 is about 1179.5764754130.

The spelling of 1641263488 in words is "one billion, six hundred forty-one million, two hundred sixty-three thousand, four hundred eighty-eight".