1098648626 has 4 divisors (see below), whose sum is σ = 1647972942. Its totient is φ = 549324312.

The previous prime is 1098648623. The next prime is 1098648689. The reversal of 1098648626 is 6268468901.

It is a happy number.

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., 812193001 + 286455625 = 28499^2 + 16925^2 .

It is not an unprimeable number, because it can be changed into a prime (1098648623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274662155 + ... + 274662158.

Almost surely, 2^1098648626 is an apocalyptic number.

1098648626 is a deficient number, since it is larger than the sum of its proper divisors (549324316).

1098648626 is an equidigital number, since it uses as much as digits as its factorization.

1098648626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549324315.

The product of its (nonzero) digits is 995328, while the sum is 50.

The square root of 1098648626 is about 33145.8689130335. The cubic root of 1098648626 is about 1031.8572160139.

The spelling of 1098648626 in words is "one billion, ninety-eight million, six hundred forty-eight thousand, six hundred twenty-six".