1954966219 has 2 divisors, whose sum is σ = 1954966220. Its totient is φ = 1954966218.

The previous prime is 1954966177. The next prime is 1954966261. The reversal of 1954966219 is 9126694591.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1954966177) and next prime (1954966261).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1954966219 is a prime.

It is a super-2 number, since 2×1954966219² = 7643785834862311922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1954966019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977483109 + 977483110.

It is an arithmetic number, because the mean of its divisors is an integer number (977483110).

Almost surely, 2^1954966219 is an apocalyptic number.

1954966219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954966219 is an equidigital number, since it uses as much as digits as its factorization.

1954966219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 52.

The square root of 1954966219 is about 44214.9999321497. Note that the first 4 decimals coincide. The cubic root of 1954966219 is about 1250.3926700220.

The spelling of 1954966219 in words is "one billion, nine hundred fifty-four million, nine hundred sixty-six thousand, two hundred nineteen".