1641797403 has 16 divisors (see below), whose sum is σ = 2204140032. Its totient is φ = 1087020000.

The previous prime is 1641797393. The next prime is 1641797419. The reversal of 1641797403 is 3047971461.

It is not a de Polignac number, because 1641797403 - 2²⁰ = 1640748827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1641797473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266053 + ... + 272153.

It is an arithmetic number, because the mean of its divisors is an integer number (137758752).

Almost surely, 2^1641797403 is an apocalyptic number.

1641797403 is a deficient number, since it is larger than the sum of its proper divisors (562342629).

1641797403 is a wasteful number, since it uses less digits than its factorization.

1641797403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6706.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 1641797403 is about 40519.0992372733. The cubic root of 1641797403 is about 1179.7043698266.

The spelling of 1641797403 in words is "one billion, six hundred forty-one million, seven hundred ninety-seven thousand, four hundred three".