1641946047 has 36 divisors (see below), whose sum is σ = 2687869656. Its totient is φ = 888844320.

The previous prime is 1641945953. The next prime is 1641946067. The reversal of 1641946047 is 7406491461.

It is not a de Polignac number, because 1641946047 - 2⁸ = 1641945791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641946067) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 37597 + ... + 68537.

It is an arithmetic number, because the mean of its divisors is an integer number (74663046).

Almost surely, 2^1641946047 is an apocalyptic number.

1641946047 is a deficient number, since it is larger than the sum of its proper divisors (1045923609).

1641946047 is a wasteful number, since it uses less digits than its factorization.

1641946047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30996 (or 30970 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 1641946047 is about 40520.9334418643. The cubic root of 1641946047 is about 1179.7399711914.

The spelling of 1641946047 in words is "one billion, six hundred forty-one million, nine hundred forty-six thousand, forty-seven".