2139460019 has 2 divisors, whose sum is σ = 2139460020. Its totient is φ = 2139460018.

The previous prime is 2139460003. The next prime is 2139460079. The reversal of 2139460019 is 9100649312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2139460019 - 2⁴ = 2139460003 is a prime.

It is a super-2 number, since 2×2139460019² = 9154578345798960722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2139460079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069730009 + 1069730010.

It is an arithmetic number, because the mean of its divisors is an integer number (1069730010).

Almost surely, 2^2139460019 is an apocalyptic number.

2139460019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2139460019 is an equidigital number, since it uses as much as digits as its factorization.

2139460019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 2139460019 is about 46254.2973030615. The cubic root of 2139460019 is about 1288.5503453813.

The spelling of 2139460019 in words is "two billion, one hundred thirty-nine million, four hundred sixty thousand, nineteen".