1022660402 has 4 divisors (see below), whose sum is σ = 1533990606. Its totient is φ = 511330200.

The previous prime is 1022660377. The next prime is 1022660407. The reversal of 1022660402 is 2040662201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 962922961 + 59737441 = 31031^2 + 7729^2 .

It is not an unprimeable number, because it can be changed into a prime (1022660407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255665099 + ... + 255665102.

Almost surely, 2^1022660402 is an apocalyptic number.

1022660402 is a deficient number, since it is larger than the sum of its proper divisors (511330204).

1022660402 is an equidigital number, since it uses as much as digits as its factorization.

1022660402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511330203.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1022660402 is about 31979.0619312074. The cubic root of 1022660402 is about 1007.4971200611.

The spelling of 1022660402 in words is "one billion, twenty-two million, six hundred sixty thousand, four hundred two".