2002278953 has 2 divisors, whose sum is σ = 2002278954. Its totient is φ = 2002278952.

The previous prime is 2002278923. The next prime is 2002278973. The reversal of 2002278953 is 3598722002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1662355984 + 339922969 = 40772^2 + 18437^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002278953 - 2¹⁶ = 2002213417 is a prime.

It is not a weakly prime, because it can be changed into another prime (2002278923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001139476 + 1001139477.

It is an arithmetic number, because the mean of its divisors is an integer number (1001139477).

Almost surely, 2^2002278953 is an apocalyptic number.

It is an amenable number.

2002278953 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002278953 is an equidigital number, since it uses as much as digits as its factorization.

2002278953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 2002278953 is about 44746.8317649417. The cubic root of 2002278953 is about 1260.3994183870.

The spelling of 2002278953 in words is "two billion, two million, two hundred seventy-eight thousand, nine hundred fifty-three".