2878732669 has 2 divisors, whose sum is σ = 2878732670. Its totient is φ = 2878732668.

The previous prime is 2878732651. The next prime is 2878732697. The reversal of 2878732669 is 9662378782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1915375225 + 963357444 = 43765^2 + 31038^2 .

It is a cyclic number.

It is not a de Polignac number, because 2878732669 - 2¹³ = 2878724477 is a prime.

It is a super-2 number, since 2×2878732669² = 16574203559135727122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2878732699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1439366334 + 1439366335.

It is an arithmetic number, because the mean of its divisors is an integer number (1439366335).

Almost surely, 2^2878732669 is an apocalyptic number.

It is an amenable number.

2878732669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2878732669 is an equidigital number, since it uses as much as digits as its factorization.

2878732669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12192768, while the sum is 58.

The square root of 2878732669 is about 53653.8225012906. The cubic root of 2878732669 is about 1422.5485985314.

The spelling of 2878732669 in words is "two billion, eight hundred seventy-eight million, seven hundred thirty-two thousand, six hundred sixty-nine".