1020088634 has 4 divisors (see below), whose sum is σ = 1530132954. Its totient is φ = 510044316.

The previous prime is 1020088609. The next prime is 1020088637. The reversal of 1020088634 is 4368800201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4368800201 = 83 ⋅52636147.

It can be written as a sum of positive squares in only one way, i.e., 924342409 + 95746225 = 30403^2 + 9785^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1020088634.

It is not an unprimeable number, because it can be changed into a prime (1020088637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255022157 + ... + 255022160.

Almost surely, 2^1020088634 is an apocalyptic number.

1020088634 is a deficient number, since it is larger than the sum of its proper divisors (510044320).

1020088634 is an equidigital number, since it uses as much as digits as its factorization.

1020088634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510044319.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 1020088634 is about 31938.8264342947. The cubic root of 1020088634 is about 1006.6518659042.

Adding to 1020088634 its reverse (4368800201), we get a palindrome (5388888835).

The spelling of 1020088634 in words is "one billion, twenty million, eighty-eight thousand, six hundred thirty-four".