238798193437451 has 2 divisors, whose sum is σ = 238798193437452. Its totient is φ = 238798193437450.

The previous prime is 238798193437421. The next prime is 238798193437493. The reversal of 238798193437451 is 154734391897832.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238798193437451 - 2¹⁰ = 238798193436427 is a prime.

It is not a weakly prime, because it can be changed into another prime (238798193437421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119399096718725 + 119399096718726.

It is an arithmetic number, because the mean of its divisors is an integer number (119399096718726).

Almost surely, 2^{238798193437451} is an apocalyptic number.

238798193437451 is a deficient number, since it is larger than the sum of its proper divisors (1).

238798193437451 is an equidigital number, since it uses as much as digits as its factorization.

238798193437451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1097349120, while the sum is 74.

The spelling of 238798193437451 in words is "two hundred thirty-eight trillion, seven hundred ninety-eight billion, one hundred ninety-three million, four hundred thirty-seven thousand, four hundred fifty-one".