2051378837 has 2 divisors, whose sum is σ = 2051378838. Its totient is φ = 2051378836.

The previous prime is 2051378783. The next prime is 2051378867. The reversal of 2051378837 is 7388731502.

Together with previous prime (2051378783) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1481172196 + 570206641 = 38486^2 + 23879^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051378837 - 2¹⁸ = 2051116693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2051378867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025689418 + 1025689419.

It is an arithmetic number, because the mean of its divisors is an integer number (1025689419).

Almost surely, 2^2051378837 is an apocalyptic number.

It is an amenable number.

2051378837 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051378837 is an equidigital number, since it uses as much as digits as its factorization.

2051378837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 2051378837 is about 45292.1498385758. The cubic root of 2051378837 is about 1270.6188392910.

The spelling of 2051378837 in words is "two billion, fifty-one million, three hundred seventy-eight thousand, eight hundred thirty-seven".