2802978790397 has 2 divisors, whose sum is σ = 2802978790398. Its totient is φ = 2802978790396.

The previous prime is 2802978790387. The next prime is 2802978790439. The reversal of 2802978790397 is 7930978792082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2408809537156 + 394169253241 = 1552034^2 + 627829^2 .

It is a cyclic number.

It is not a de Polignac number, because 2802978790397 - 2¹⁸ = 2802978528253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2802978790397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2802978790387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1401489395198 + 1401489395199.

It is an arithmetic number, because the mean of its divisors is an integer number (1401489395199).

Almost surely, 2^{2802978790397} is an apocalyptic number.

It is an amenable number.

2802978790397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2802978790397 is an equidigital number, since it uses as much as digits as its factorization.

2802978790397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192036096, while the sum is 71.

The spelling of 2802978790397 in words is "two trillion, eight hundred two billion, nine hundred seventy-eight million, seven hundred ninety thousand, three hundred ninety-seven".