1645160120 has 32 divisors (see below), whose sum is σ = 3752323920. Its totient is φ = 649048320.

The previous prime is 1645160113. The next prime is 1645160131. The reversal of 1645160120 is 210615461.

It is a super-3 number, since 3×1645160120³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1645160120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278786 + ... + 284625.

Almost surely, 2^1645160120 is an apocalyptic number.

1645160120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1645160120 is an abundant number, since it is smaller than the sum of its proper divisors (2107163800).

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

1645160120 is a wasteful number, since it uses less digits than its factorization.

1645160120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563495 (or 563491 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1645160120 is about 40560.5734673463. The cubic root of 1645160120 is about 1180.5092410831.

Adding to 1645160120 its reverse (210615461), we get a palindrome (1855775581).

The spelling of 1645160120 in words is "one billion, six hundred forty-five million, one hundred sixty thousand, one hundred twenty".