29788343649 has 45 divisors (see below), whose sum is σ = 45150777441. Its totient is φ = 19572046200.

The previous prime is 29788343617. The next prime is 29788343657. The reversal of 29788343649 is 94634388792.

The square root of 29788343649 is 172593.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 29788343649 - 2⁵ = 29788343617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29788343609) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 197273724 + ... + 197273874.

Almost surely, 2^29788343649 is an apocalyptic number.

29788343649 is the 172593-rd square number.

29788343649 is the 86297-th centered octagonal number.

It is an amenable number.

29788343649 is a deficient number, since it is larger than the sum of its proper divisors (15362433792).

29788343649 is an frugal number, since it uses more digits than its factorization.

29788343649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 281 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 63.

The spelling of 29788343649 in words is "twenty-nine billion, seven hundred eighty-eight million, three hundred forty-three thousand, six hundred forty-nine".