149798806819 has 2 divisors, whose sum is σ = 149798806820. Its totient is φ = 149798806818.

The previous prime is 149798806757. The next prime is 149798806847. The reversal of 149798806819 is 918608897941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149798806819 - 2⁹ = 149798806307 is a prime.

It is a super-2 number, since 2×149798806819² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (149798806849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74899403409 + 74899403410.

It is an arithmetic number, because the mean of its divisors is an integer number (74899403410).

Almost surely, 2^149798806819 is an apocalyptic number.

149798806819 is a deficient number, since it is larger than the sum of its proper divisors (1).

149798806819 is an equidigital number, since it uses as much as digits as its factorization.

149798806819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62705664, while the sum is 70.

The spelling of 149798806819 in words is "one hundred forty-nine billion, seven hundred ninety-eight million, eight hundred six thousand, eight hundred nineteen".