1541820851 has 2 divisors, whose sum is σ = 1541820852. Its totient is φ = 1541820850.

The previous prime is 1541820773. The next prime is 1541820883. The reversal of 1541820851 is 1580281451.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1541820851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1541820551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770910425 + 770910426.

It is an arithmetic number, because the mean of its divisors is an integer number (770910426).

Almost surely, 2^1541820851 is an apocalyptic number.

1541820851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1541820851 is an equidigital number, since it uses as much as digits as its factorization.

1541820851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12800, while the sum is 35.

The square root of 1541820851 is about 39266.0266770143. The cubic root of 1541820851 is about 1155.2553050935.

The spelling of 1541820851 in words is "one billion, five hundred forty-one million, eight hundred twenty thousand, eight hundred fifty-one".