1641823950 has 96 divisors (see below), whose sum is σ = 4575707136. Its totient is φ = 386559360.

The previous prime is 1641823949. The next prime is 1641823969. The reversal of 1641823950 is 593281461.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 1641823899 and 1641823908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26547 + ... + 63153.

It is an arithmetic number, because the mean of its divisors is an integer number (47663616).

Almost surely, 2^1641823950 is an apocalyptic number.

1641823950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1641823950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2287853568).

1641823950 is an abundant number, since it is smaller than the sum of its proper divisors (2933883186).

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

1641823950 is a wasteful number, since it uses less digits than its factorization.

1641823950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36658 (or 36653 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 1641823950 is about 40519.4268222047. The cubic root of 1641823950 is about 1179.7107281920.

The spelling of 1641823950 in words is "one billion, six hundred forty-one million, eight hundred twenty-three thousand, nine hundred fifty".