1641072594 has 64 divisors (see below), whose sum is σ = 3995744256. Its totient is φ = 438622464.

The previous prime is 1641072593. The next prime is 1641072613. The reversal of 1641072594 is 4952701461.

It is not an unprimeable number, because it can be changed into a prime (1641072593) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112357 + ... + 126119.

It is an arithmetic number, because the mean of its divisors is an integer number (62433504).

Almost surely, 2^1641072594 is an apocalyptic number.

1641072594 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1641072594, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1997872128).

1641072594 is an abundant number, since it is smaller than the sum of its proper divisors (2354671662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1641072594 is a wasteful number, since it uses less digits than its factorization.

1641072594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13959.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 1641072594 is about 40510.1542085438. The cubic root of 1641072594 is about 1179.5307417849.

The spelling of 1641072594 in words is "one billion, six hundred forty-one million, seventy-two thousand, five hundred ninety-four".