1638054229 has 32 divisors (see below), whose sum is σ = 1986969600. Its totient is φ = 1320952320.

The previous prime is 1638054211. The next prime is 1638054247. The reversal of 1638054229 is 9224508361.

It is an interprime number because it is at equal distance from previous prime (1638054211) and next prime (1638054247).

It is a cyclic number.

It is not a de Polignac number, because 1638054229 - 2⁷ = 1638054101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1638054191 and 1638054200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1638054029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1241232 + ... + 1242550.

It is an arithmetic number, because the mean of its divisors is an integer number (62092800).

Almost surely, 2^1638054229 is an apocalyptic number.

It is an amenable number.

1638054229 is a deficient number, since it is larger than the sum of its proper divisors (348915371).

1638054229 is a wasteful number, since it uses less digits than its factorization.

1638054229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1638054229 is about 40472.8826376378. The cubic root of 1638054229 is about 1178.8071420079.

The spelling of 1638054229 in words is "one billion, six hundred thirty-eight million, fifty-four thousand, two hundred twenty-nine".