1641510420 has 48 divisors (see below), whose sum is σ = 5014070208. Its totient is φ = 397941760.

The previous prime is 1641510407. The next prime is 1641510469. The reversal of 1641510420 is 240151461.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1242909 + ... + 1244228.

It is an arithmetic number, because the mean of its divisors is an integer number (104459796).

Almost surely, 2^1641510420 is an apocalyptic number.

1641510420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1641510420 is an abundant number, since it is smaller than the sum of its proper divisors (3372559788).

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

1641510420 is a wasteful number, since it uses less digits than its factorization.

1641510420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2487160 (or 2487158 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1641510420 is about 40515.5577525474. The cubic root of 1641510420 is about 1179.6356291430.

Adding to 1641510420 its reverse (240151461), we get a palindrome (1881661881).

The spelling of 1641510420 in words is "one billion, six hundred forty-one million, five hundred ten thousand, four hundred twenty".