400000000019 has 2 divisors, whose sum is σ = 400000000020. Its totient is φ = 400000000018.

The previous prime is 399999999977. The next prime is 400000000061. The reversal of 400000000019 is 910000000004.

It is a balanced prime because it is at equal distance from previous prime (399999999977) and next prime (400000000061).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400000000019 is a prime.

It is a super-2 number, since 2×400000000019² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 399999999931 and 400000000012.

It is not a weakly prime, because it can be changed into another prime (400000000819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200000000009 + 200000000010.

It is an arithmetic number, because the mean of its divisors is an integer number (200000000010).

Almost surely, 2^400000000019 is an apocalyptic number.

400000000019 is a deficient number, since it is larger than the sum of its proper divisors (1).

400000000019 is an equidigital number, since it uses as much as digits as its factorization.

400000000019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The spelling of 400000000019 in words is "four hundred billion, nineteen", and thus it is an aban number.