1641465740 has 12 divisors (see below), whose sum is σ = 3447078096. Its totient is φ = 656586288.

The previous prime is 1641465737. The next prime is 1641465767. The reversal of 1641465740 is 475641461.

1641465740 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1641465694 and 1641465703.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41036624 + ... + 41036663.

It is an arithmetic number, because the mean of its divisors is an integer number (287256508).

Almost surely, 2^1641465740 is an apocalyptic number.

1641465740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1641465740 is an abundant number, since it is smaller than the sum of its proper divisors (1805612356).

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

1641465740 is a wasteful number, since it uses less digits than its factorization.

1641465740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82073296 (or 82073294 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 1641465740 is about 40515.0063556702. The cubic root of 1641465740 is about 1179.6249262771.

The spelling of 1641465740 in words is "one billion, six hundred forty-one million, four hundred sixty-five thousand, seven hundred forty".