1681299241 has 8 divisors (see below), whose sum is σ = 1779110784. Its totient is φ = 1585547040.

The previous prime is 1681299233. The next prime is 1681299247. The reversal of 1681299241 is 1429921861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1681299241 - 2³ = 1681299233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1681299247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513156 + ... + 516421.

It is an arithmetic number, because the mean of its divisors is an integer number (222388848).

Almost surely, 2^1681299241 is an apocalyptic number.

It is an amenable number.

1681299241 is a deficient number, since it is larger than the sum of its proper divisors (97811543).

1681299241 is a wasteful number, since it uses less digits than its factorization.

1681299241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029671.

The product of its digits is 62208, while the sum is 43.

The square root of 1681299241 is about 41003.6491180968. The cubic root of 1681299241 is about 1189.0907634567.

The spelling of 1681299241 in words is "one billion, six hundred eighty-one million, two hundred ninety-nine thousand, two hundred forty-one".