234780351649 has 2 divisors, whose sum is σ = 234780351650. Its totient is φ = 234780351648.

The previous prime is 234780351629. The next prime is 234780351667. The reversal of 234780351649 is 946153087432.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203394686049 + 31385665600 = 450993^2 + 177160^2 .

It is a cyclic number.

It is not a de Polignac number, because 234780351649 - 2²⁵ = 234746797217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 234780351596 and 234780351605.

It is not a weakly prime, because it can be changed into another prime (234780351629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117390175824 + 117390175825.

It is an arithmetic number, because the mean of its divisors is an integer number (117390175825).

It is a 1-persistent number, because it is pandigital, but 2⋅234780351649 = 469560703298 is not.

Almost surely, 2^234780351649 is an apocalyptic number.

It is an amenable number.

234780351649 is a deficient number, since it is larger than the sum of its proper divisors (1).

234780351649 is an equidigital number, since it uses as much as digits as its factorization.

234780351649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 234780351649 in words is "two hundred thirty-four billion, seven hundred eighty million, three hundred fifty-one thousand, six hundred forty-nine".