2153974903 has 2 divisors, whose sum is σ = 2153974904. Its totient is φ = 2153974902.

The previous prime is 2153974897. The next prime is 2153974939. The reversal of 2153974903 is 3094793512.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2153974903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2153974903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2153974973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076987451 + 1076987452.

It is an arithmetic number, because the mean of its divisors is an integer number (1076987452).

Almost surely, 2^2153974903 is an apocalyptic number.

2153974903 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153974903 is an equidigital number, since it uses as much as digits as its factorization.

2153974903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 2153974903 is about 46410.9351661869. The cubic root of 2153974903 is about 1291.4577801167.

The spelling of 2153974903 in words is "two billion, one hundred fifty-three million, nine hundred seventy-four thousand, nine hundred three".