2215401493 has 2 divisors, whose sum is σ = 2215401494. Its totient is φ = 2215401492.

The previous prime is 2215401491. The next prime is 2215401511. The reversal of 2215401493 is 3941045122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2208812004 + 6589489 = 46998^2 + 2567^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215401493 - 2¹ = 2215401491 is a prime.

Together with 2215401491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2215401491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107700746 + 1107700747.

It is an arithmetic number, because the mean of its divisors is an integer number (1107700747).

Almost surely, 2^2215401493 is an apocalyptic number.

It is an amenable number.

2215401493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215401493 is an equidigital number, since it uses as much as digits as its factorization.

2215401493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2215401493 is about 47068.0517230106. The cubic root of 2215401493 is about 1303.6193994833.

The spelling of 2215401493 in words is "two billion, two hundred fifteen million, four hundred one thousand, four hundred ninety-three".