1920624818149 has 2 divisors, whose sum is σ = 1920624818150. Its totient is φ = 1920624818148.

The previous prime is 1920624818113. The next prime is 1920624818173. The reversal of 1920624818149 is 9418184260291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1801863252225 + 118761565924 = 1342335^2 + 344618^2 .

It is a cyclic number.

It is not a de Polignac number, because 1920624818149 - 2³⁵ = 1886265079781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1920624818149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1920624818179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960312409074 + 960312409075.

It is an arithmetic number, because the mean of its divisors is an integer number (960312409075).

Almost surely, 2^{1920624818149} is an apocalyptic number.

It is an amenable number.

1920624818149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1920624818149 is an equidigital number, since it uses as much as digits as its factorization.

1920624818149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 55.

The spelling of 1920624818149 in words is "one trillion, nine hundred twenty billion, six hundred twenty-four million, eight hundred eighteen thousand, one hundred forty-nine".