2649139951 has 2 divisors, whose sum is σ = 2649139952. Its totient is φ = 2649139950.

The previous prime is 2649139901. The next prime is 2649139957. The reversal of 2649139951 is 1599319462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2649139951 - 2¹¹ = 2649137903 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2649139895 and 2649139904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2649139957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1324569975 + 1324569976.

It is an arithmetic number, because the mean of its divisors is an integer number (1324569976).

Almost surely, 2^2649139951 is an apocalyptic number.

2649139951 is a deficient number, since it is larger than the sum of its proper divisors (1).

2649139951 is an equidigital number, since it uses as much as digits as its factorization.

2649139951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 524880, while the sum is 49.

The square root of 2649139951 is about 51469.7964927005. The cubic root of 2649139951 is about 1383.6777818535.

The spelling of 2649139951 in words is "two billion, six hundred forty-nine million, one hundred thirty-nine thousand, nine hundred fifty-one".