1821470803 has 2 divisors, whose sum is σ = 1821470804. Its totient is φ = 1821470802.

The previous prime is 1821470723. The next prime is 1821470821. The reversal of 1821470803 is 3080741281.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1821470803 - 2¹⁷ = 1821339731 is a prime.

It is not a weakly prime, because it can be changed into another prime (1821473803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910735401 + 910735402.

It is an arithmetic number, because the mean of its divisors is an integer number (910735402).

Almost surely, 2^1821470803 is an apocalyptic number.

1821470803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1821470803 is an equidigital number, since it uses as much as digits as its factorization.

1821470803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 1821470803 is about 42678.6926111848. The cubic root of 1821470803 is about 1221.2579524463.

The spelling of 1821470803 in words is "one billion, eight hundred twenty-one million, four hundred seventy thousand, eight hundred three".