213802019 has 2 divisors, whose sum is σ = 213802020. Its totient is φ = 213802018.

The previous prime is 213801983. The next prime is 213802027. The reversal of 213802019 is 910208312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213802019 - 2¹² = 213797923 is a prime.

It is a super-2 number, since 2×213802019² = 91422606656952722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213802049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106901009 + 106901010.

It is an arithmetic number, because the mean of its divisors is an integer number (106901010).

Almost surely, 2^213802019 is an apocalyptic number.

213802019 is a deficient number, since it is larger than the sum of its proper divisors (1).

213802019 is an equidigital number, since it uses as much as digits as its factorization.

213802019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 213802019 is about 14621.9704212531. The cubic root of 213802019 is about 597.9578899368.

The spelling of 213802019 in words is "two hundred thirteen million, eight hundred two thousand, nineteen".