1641755290 has 48 divisors (see below), whose sum is σ = 3458391552. Its totient is φ = 559489056.

The previous prime is 1641755267. The next prime is 1641755317. The reversal of 1641755290 is 925571461.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71799 + ... + 91861.

It is an arithmetic number, because the mean of its divisors is an integer number (72049824).

Almost surely, 2^1641755290 is an apocalyptic number.

1641755290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1641755290 is an abundant number, since it is smaller than the sum of its proper divisors (1816636262).

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

1641755290 is a wasteful number, since it uses less digits than its factorization.

1641755290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20251 (or 20244 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 1641755290 is about 40518.5795654290. The cubic root of 1641755290 is about 1179.6942830533.

The spelling of 1641755290 in words is "one billion, six hundred forty-one million, seven hundred fifty-five thousand, two hundred ninety".