1609117650 has 240 divisors, whose sum is σ = 5152973760. Its totient is φ = 364694400.

The previous prime is 1609117613. The next prime is 1609117661. The reversal of 1609117650 is 567119061.

It is a happy number.

It is a super-2 number, since 2×1609117650² = 5178519223083045000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 5981716 + ... + 5981984.

It is an arithmetic number, because the mean of its divisors is an integer number (21470724).

Almost surely, 2^1609117650 is an apocalyptic number.

1609117650 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 1609117650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2576486880).

1609117650 is an abundant number, since it is smaller than the sum of its proper divisors (3543856110).

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

1609117650 is a wasteful number, since it uses less digits than its factorization.

1609117650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 1609117650 is about 40113.8087196915. The cubic root of 1609117650 is about 1171.8245693498.

The spelling of 1609117650 in words is "one billion, six hundred nine million, one hundred seventeen thousand, six hundred fifty".