1238400541 has 4 divisors (see below), whose sum is σ = 1415314912. Its totient is φ = 1061486172.

The previous prime is 1238400533. The next prime is 1238400551. The reversal of 1238400541 is 1450048321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1238400541 - 2³ = 1238400533 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 (1238400511) 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, 88457175 + ... + 88457188.

It is an arithmetic number, because the mean of its divisors is an integer number (353828728).

Almost surely, 2^1238400541 is an apocalyptic number.

It is an amenable number.

1238400541 is a deficient number, since it is larger than the sum of its proper divisors (176914371).

1238400541 is an equidigital number, since it uses as much as digits as its factorization.

1238400541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176914370.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1238400541 is about 35190.9156033201. The cubic root of 1238400541 is about 1073.8749480169.

Adding to 1238400541 its reverse (1450048321), we get a palindrome (2688448862).

The spelling of 1238400541 in words is "one billion, two hundred thirty-eight million, four hundred thousand, five hundred forty-one".