1936440019 has 2 divisors, whose sum is σ = 1936440020. Its totient is φ = 1936440018.

The previous prime is 1936440007. The next prime is 1936440031. The reversal of 1936440019 is 9100446391.

It is a balanced prime because it is at equal distance from previous prime (1936440007) and next prime (1936440031).

It is an emirp because it is prime and its reverse (9100446391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1936440019 - 2²⁷ = 1802222291 is a prime.

It is a super-2 number, since 2×1936440019² = 7499599894369440722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1936440019.

It is not a weakly prime, because it can be changed into another prime (1936440419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 968220009 + 968220010.

It is an arithmetic number, because the mean of its divisors is an integer number (968220010).

Almost surely, 2^1936440019 is an apocalyptic number.

1936440019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1936440019 is an equidigital number, since it uses as much as digits as its factorization.

1936440019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 1936440019 is about 44004.9999318259. Note that the first 4 decimals coincide. The cubic root of 1936440019 is about 1246.4303531876.

The spelling of 1936440019 in words is "one billion, nine hundred thirty-six million, four hundred forty thousand, nineteen".