1643052315 has 16 divisors (see below), whose sum is σ = 2630504448. Its totient is φ = 875754336.

The previous prime is 1643052293. The next prime is 1643052319. The reversal of 1643052315 is 5132503461.

It is not a de Polignac number, because 1643052315 - 2⁵ = 1643052283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1643052319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7989 + ... + 57878.

It is an arithmetic number, because the mean of its divisors is an integer number (164406528).

Almost surely, 2^1643052315 is an apocalyptic number.

1643052315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1643052315 is a deficient number, since it is larger than the sum of its proper divisors (987452133).

1643052315 is a wasteful number, since it uses less digits than its factorization.

1643052315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67538.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1643052315 is about 40534.5817173435. The cubic root of 1643052315 is about 1180.0048632855.

Adding to 1643052315 its reverse (5132503461), we get a palindrome (6775555776).

The spelling of 1643052315 in words is "one billion, six hundred forty-three million, fifty-two thousand, three hundred fifteen".