2153678503 has 2 divisors, whose sum is σ = 2153678504. Its totient is φ = 2153678502.

The previous prime is 2153678489. The next prime is 2153678561. The reversal of 2153678503 is 3058763512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2153678503 - 2²¹ = 2151581351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2153678563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076839251 + 1076839252.

It is an arithmetic number, because the mean of its divisors is an integer number (1076839252).

Almost surely, 2^2153678503 is an apocalyptic number.

2153678503 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153678503 is an equidigital number, since it uses as much as digits as its factorization.

2153678503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 2153678503 is about 46407.7418433606. The cubic root of 2153678503 is about 1291.3985399270.

The spelling of 2153678503 in words is "two billion, one hundred fifty-three million, six hundred seventy-eight thousand, five hundred three".