1945099908677 has 2 divisors, whose sum is σ = 1945099908678. Its totient is φ = 1945099908676.

The previous prime is 1945099908643. The next prime is 1945099908709. The reversal of 1945099908677 is 7768099905491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1880721503236 + 64378405441 = 1371394^2 + 253729^2 .

It is a cyclic number.

It is not a de Polignac number, because 1945099908677 - 2¹⁴ = 1945099892293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1945099908877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972549954338 + 972549954339.

It is an arithmetic number, because the mean of its divisors is an integer number (972549954339).

Almost surely, 2^{1945099908677} is an apocalyptic number.

It is an amenable number.

1945099908677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1945099908677 is an equidigital number, since it uses as much as digits as its factorization.

1945099908677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 308629440, while the sum is 74.

The spelling of 1945099908677 in words is "one trillion, nine hundred forty-five billion, ninety-nine million, nine hundred eight thousand, six hundred seventy-seven".