1949923071419 has 2 divisors, whose sum is σ = 1949923071420. Its totient is φ = 1949923071418.

The previous prime is 1949923071407. The next prime is 1949923071443. The reversal of 1949923071419 is 9141703299491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1949923071419 - 2⁴ = 1949923071403 is a prime.

It is a super-2 number, since 2×1949923071419² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1949923071469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974961535709 + 974961535710.

It is an arithmetic number, because the mean of its divisors is an integer number (974961535710).

Almost surely, 2^{1949923071419} is an apocalyptic number.

1949923071419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1949923071419 is an equidigital number, since it uses as much as digits as its factorization.

1949923071419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4408992, while the sum is 59.

The spelling of 1949923071419 in words is "one trillion, nine hundred forty-nine billion, nine hundred twenty-three million, seventy-one thousand, four hundred nineteen".