1641031340 has 24 divisors (see below), whose sum is σ = 3711256080. Its totient is φ = 605919168.

The previous prime is 1641031339. The next prime is 1641031409. The reversal of 1641031340 is 431301461.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3155570 + ... + 3156089.

It is an arithmetic number, because the mean of its divisors is an integer number (154635670).

Almost surely, 2^1641031340 is an apocalyptic number.

1641031340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1641031340 is an abundant number, since it is smaller than the sum of its proper divisors (2070224740).

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

1641031340 is a wasteful number, since it uses less digits than its factorization.

1641031340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311681 (or 6311679 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1641031340 is about 40509.6450243643. The cubic root of 1641031340 is about 1179.5208578490.

The spelling of 1641031340 in words is "one billion, six hundred forty-one million, thirty-one thousand, three hundred forty".