1641152120 has 64 divisors (see below), whose sum is σ = 4079833920. Its totient is φ = 590977024.

The previous prime is 1641152101. The next prime is 1641152179. The reversal of 1641152120 is 212511461.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 36827 + ... + 68106.

It is an arithmetic number, because the mean of its divisors is an integer number (63747405).

Almost surely, 2^1641152120 is an apocalyptic number.

1641152120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1641152120 is an abundant number, since it is smaller than the sum of its proper divisors (2438681800).

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

1641152120 is a wasteful number, since it uses less digits than its factorization.

1641152120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104984 (or 104980 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1641152120 is about 40511.1357530247. The cubic root of 1641152120 is about 1179.5497947398.

Adding to 1641152120 its reverse (212511461), we get a palindrome (1853663581).

The spelling of 1641152120 in words is "one billion, six hundred forty-one million, one hundred fifty-two thousand, one hundred twenty".