119778013 has 2 divisors, whose sum is σ = 119778014. Its totient is φ = 119778012.

The previous prime is 119778011. The next prime is 119778019. The reversal of 119778013 is 310877911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117548964 + 2229049 = 10842^2 + 1493^2 .

It is a cyclic number.

It is not a de Polignac number, because 119778013 - 2¹ = 119778011 is a prime.

Together with 119778011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (119778011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59889006 + 59889007.

It is an arithmetic number, because the mean of its divisors is an integer number (59889007).

Almost surely, 2^119778013 is an apocalyptic number.

It is an amenable number.

119778013 is a deficient number, since it is larger than the sum of its proper divisors (1).

119778013 is an equidigital number, since it uses as much as digits as its factorization.

119778013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 37.

The square root of 119778013 is about 10944.3141859141. The cubic root of 119778013 is about 492.9380787816.

The spelling of 119778013 in words is "one hundred nineteen million, seven hundred seventy-eight thousand, thirteen".