1609870950 has 120 divisors (see below), whose sum is σ = 4708705320. Its totient is φ = 406684800.

The previous prime is 1609870949. The next prime is 1609870963. The reversal of 1609870950 is 590789061.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1609870896 and 1609870905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 66490 + ... + 87410.

It is an arithmetic number, because the mean of its divisors is an integer number (39239211).

Almost surely, 2^1609870950 is an apocalyptic number.

1609870950 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 1609870950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2354352660).

1609870950 is an abundant number, since it is smaller than the sum of its proper divisors (3098834370).

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

1609870950 is a wasteful number, since it uses less digits than its factorization.

1609870950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20964 (or 20950 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 1609870950 is about 40123.1971557602. The cubic root of 1609870950 is about 1172.0074020003.

The spelling of 1609870950 in words is "one billion, six hundred nine million, eight hundred seventy thousand, nine hundred fifty".