2157305383 has 2 divisors, whose sum is σ = 2157305384. Its totient is φ = 2157305382.

The previous prime is 2157305363. The next prime is 2157305477. The reversal of 2157305383 is 3835037512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2157305383 - 2⁹ = 2157304871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2157305363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078652691 + 1078652692.

It is an arithmetic number, because the mean of its divisors is an integer number (1078652692).

Almost surely, 2^2157305383 is an apocalyptic number.

2157305383 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157305383 is an equidigital number, since it uses as much as digits as its factorization.

2157305383 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 2157305383 is about 46446.8016444620. The cubic root of 2157305383 is about 1292.1230554914.

The spelling of 2157305383 in words is "two billion, one hundred fifty-seven million, three hundred five thousand, three hundred eighty-three".