1641145235 has 64 divisors (see below), whose sum is σ = 2308953600. Its totient is φ = 1111283712.

The previous prime is 1641145229. The next prime is 1641145271. The reversal of 1641145235 is 5325411461.

It is not a de Polignac number, because 1641145235 - 2¹⁴ = 1641128851 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3137684 + ... + 3138206.

It is an arithmetic number, because the mean of its divisors is an integer number (36077400).

Almost surely, 2^1641145235 is an apocalyptic number.

1641145235 is a deficient number, since it is larger than the sum of its proper divisors (667808365).

1641145235 is a wasteful number, since it uses less digits than its factorization.

1641145235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660.

The product of its digits is 14400, while the sum is 32.

The square root of 1641145235 is about 40511.0507763005. The cubic root of 1641145235 is about 1179.5481452458.

Adding to 1641145235 its reverse (5325411461), we get a palindrome (6966556696).

The spelling of 1641145235 in words is "one billion, six hundred forty-one million, one hundred forty-five thousand, two hundred thirty-five".