48818381 has 2 divisors, whose sum is σ = 48818382. Its totient is φ = 48818380.

The previous prime is 48818377. The next prime is 48818387. The reversal of 48818381 is 18381884.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24661156 + 24157225 = 4966^2 + 4915^2 .

It is a cyclic number.

It is not a de Polignac number, because 48818381 - 2² = 48818377 is a prime.

It is a super-2 number, since 2×48818381² = 4766468646922322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48818387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24409190 + 24409191.

It is an arithmetic number, because the mean of its divisors is an integer number (24409191).

Almost surely, 2^48818381 is an apocalyptic number.

It is an amenable number.

48818381 is a deficient number, since it is larger than the sum of its proper divisors (1).

48818381 is an equidigital number, since it uses as much as digits as its factorization.

48818381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49152, while the sum is 41.

The square root of 48818381 is about 6987.0151710154. The cubic root of 48818381 is about 365.4779028025.

The spelling of 48818381 in words is "forty-eight million, eight hundred eighteen thousand, three hundred eighty-one".