29487378493 has 2 divisors, whose sum is σ = 29487378494. Its totient is φ = 29487378492.

The previous prime is 29487378449. The next prime is 29487378511. The reversal of 29487378493 is 39487378492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14868875844 + 14618502649 = 121938^2 + 120907^2 .

It is a cyclic number.

It is not a de Polignac number, because 29487378493 - 2¹³ = 29487370301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29487778493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14743689246 + 14743689247.

It is an arithmetic number, because the mean of its divisors is an integer number (14743689247).

Almost surely, 2^29487378493 is an apocalyptic number.

It is an amenable number.

29487378493 is a deficient number, since it is larger than the sum of its proper divisors (1).

29487378493 is an equidigital number, since it uses as much as digits as its factorization.

29487378493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73156608, while the sum is 64.

Subtracting 29487378493 from its reverse (39487378492), we obtain a palindrome (9999999999).

The spelling of 29487378493 in words is "twenty-nine billion, four hundred eighty-seven million, three hundred seventy-eight thousand, four hundred ninety-three".