490981541 has 4 divisors (see below), whose sum is σ = 491799084. Its totient is φ = 490164000.

The previous prime is 490981537. The next prime is 490981577. The reversal of 490981541 is 145189094.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 335256100 + 155725441 = 18310^2 + 12479^2 .

It is a cyclic number.

It is not a de Polignac number, because 490981541 - 2² = 490981537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490981531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407870 + ... + 409071.

It is an arithmetic number, because the mean of its divisors is an integer number (122949771).

Almost surely, 2^490981541 is an apocalyptic number.

It is an amenable number.

490981541 is a deficient number, since it is larger than the sum of its proper divisors (817543).

490981541 is an equidigital number, since it uses as much as digits as its factorization.

490981541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817542.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 490981541 is about 22158.1032807413. The cubic root of 490981541 is about 788.8995740058.

The spelling of 490981541 in words is "four hundred ninety million, nine hundred eighty-one thousand, five hundred forty-one".