2045256139 has 2 divisors, whose sum is σ = 2045256140. Its totient is φ = 2045256138.

The previous prime is 2045256119. The next prime is 2045256287. The reversal of 2045256139 is 9316525402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2045256139 - 2⁷ = 2045256011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2045256098 and 2045256107.

It is not a weakly prime, because it can be changed into another prime (2045256119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022628069 + 1022628070.

It is an arithmetic number, because the mean of its divisors is an integer number (1022628070).

Almost surely, 2^2045256139 is an apocalyptic number.

2045256139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045256139 is an equidigital number, since it uses as much as digits as its factorization.

2045256139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 2045256139 is about 45224.5081675854. The cubic root of 2045256139 is about 1269.3534516701.

The spelling of 2045256139 in words is "two billion, forty-five million, two hundred fifty-six thousand, one hundred thirty-nine".