2156016419 has 2 divisors, whose sum is σ = 2156016420. Its totient is φ = 2156016418.

The previous prime is 2156016407. The next prime is 2156016461. The reversal of 2156016419 is 9146106512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2156016419 - 2¹² = 2156012323 is a prime.

It is a super-2 number, since 2×2156016419² = 9296813597995167122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2156016019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078008209 + 1078008210.

It is an arithmetic number, because the mean of its divisors is an integer number (1078008210).

Almost surely, 2^2156016419 is an apocalyptic number.

2156016419 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156016419 is an equidigital number, since it uses as much as digits as its factorization.

2156016419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 2156016419 is about 46432.9238687378. The cubic root of 2156016419 is about 1291.8656615636.

The spelling of 2156016419 in words is "two billion, one hundred fifty-six million, sixteen thousand, four hundred nineteen".