1938468029 has 4 divisors (see below), whose sum is σ = 1939031580. Its totient is φ = 1937904480.

The previous prime is 1938468023. The next prime is 1938468041. The reversal of 1938468029 is 9208648391.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 663835225 + 1274632804 = 25765^2 + 35702^2 .

It is a cyclic number.

It is not a de Polignac number, because 1938468029 - 2⁴ = 1938468013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938468023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276584 + ... + 283505.

It is an arithmetic number, because the mean of its divisors is an integer number (484757895).

Almost surely, 2^1938468029 is an apocalyptic number.

It is an amenable number.

1938468029 is a deficient number, since it is larger than the sum of its proper divisors (563551).

1938468029 is an equidigital number, since it uses as much as digits as its factorization.

1938468029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563550.

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 1938468029 is about 44028.0368515336. The cubic root of 1938468029 is about 1246.8653251419.

The spelling of 1938468029 in words is "one billion, nine hundred thirty-eight million, four hundred sixty-eight thousand, twenty-nine".