2381651 has 2 divisors, whose sum is σ = 2381652. Its totient is φ = 2381650.

The previous prime is 2381633. The next prime is 2381657. The reversal of 2381651 is 1561832.

2381651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2381651 - 2¹⁰ = 2380627 is a prime.

It is a super-2 number, since 2×2381651² = 11344522971602, which contains 22 as substring.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 2381651.

It is not a weakly prime, because it can be changed into another prime (2381657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1190825 + 1190826.

It is an arithmetic number, because the mean of its divisors is an integer number (1190826).

2^2381651 is an apocalyptic number.

2381651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381651 is an equidigital number, since it uses as much as digits as its factorization.

2381651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 26.

The square root of 2381651 is about 1543.2598614621. The cubic root of 2381651 is about 133.5445104939.

The spelling of 2381651 in words is "two million, three hundred eighty-one thousand, six hundred fifty-one".