541983691 has 2 divisors, whose sum is σ = 541983692. Its totient is φ = 541983690.

The previous prime is 541983667. The next prime is 541983713. The reversal of 541983691 is 196389145.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-541983691 is a prime.

It is not a weakly prime, because it can be changed into another prime (541983641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270991845 + 270991846.

It is an arithmetic number, because the mean of its divisors is an integer number (270991846).

Almost surely, 2^541983691 is an apocalyptic number.

541983691 is a deficient number, since it is larger than the sum of its proper divisors (1).

541983691 is an equidigital number, since it uses as much as digits as its factorization.

541983691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 46.

The square root of 541983691 is about 23280.5431852438. The cubic root of 541983691 is about 815.3212082776.

The spelling of 541983691 in words is "five hundred forty-one million, nine hundred eighty-three thousand, six hundred ninety-one".