1641481270 has 32 divisors (see below), whose sum is σ = 3471219360. Its totient is φ = 550986240.

The previous prime is 1641481213. The next prime is 1641481271. The reversal of 1641481270 is 721841461.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641481271) 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, 572515 + ... + 575374.

It is an arithmetic number, because the mean of its divisors is an integer number (108475605).

Almost surely, 2^1641481270 is an apocalyptic number.

1641481270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1641481270 is an abundant number, since it is smaller than the sum of its proper divisors (1829738090).

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

1641481270 is a wasteful number, since it uses less digits than its factorization.

1641481270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147920.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 1641481270 is about 40515.1980125977. The cubic root of 1641481270 is about 1179.6286464313.

The spelling of 1641481270 in words is "one billion, six hundred forty-one million, four hundred eighty-one thousand, two hundred seventy".