1645116050 has 48 divisors (see below), whose sum is σ = 3106307880. Its totient is φ = 648130560.

The previous prime is 1645116047. The next prime is 1645116113. The reversal of 1645116050 is 506115461.

It can be written as a sum of positive squares in 12 ways, for example, as 34939921 + 1610176129 = 5911^2 + 40127^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1499102 + ... + 1500198.

Almost surely, 2^1645116050 is an apocalyptic number.

1645116050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1645116050 is a deficient number, since it is larger than the sum of its proper divisors (1461191830).

1645116050 is a wasteful number, since it uses less digits than its factorization.

1645116050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535 (or 1530 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1645116050 is about 40560.0302021584. The cubic root of 1645116050 is about 1180.4986999598.

The spelling of 1645116050 in words is "one billion, six hundred forty-five million, one hundred sixteen thousand, fifty".