1641034989 has 24 divisors (see below), whose sum is σ = 2655767712. Its totient is φ = 967684320.

The previous prime is 1641034979. The next prime is 1641034991. The reversal of 1641034989 is 9894301461.

It is not a de Polignac number, because 1641034989 - 2²³ = 1632646381 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641034979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220339 + ... + 227664.

It is an arithmetic number, because the mean of its divisors is an integer number (110656988).

Almost surely, 2^1641034989 is an apocalyptic number.

It is an amenable number.

1641034989 is a deficient number, since it is larger than the sum of its proper divisors (1014732723).

1641034989 is a wasteful number, since it uses less digits than its factorization.

1641034989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448057 (or 448054 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 1641034989 is about 40509.6900629960. The cubic root of 1641034989 is about 1179.5217321098.

The spelling of 1641034989 in words is "one billion, six hundred forty-one million, thirty-four thousand, nine hundred eighty-nine".