1098620099 has 2 divisors, whose sum is σ = 1098620100. Its totient is φ = 1098620098.

The previous prime is 1098620063. The next prime is 1098620177. The reversal of 1098620099 is 9900268901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1098620099 - 2¹² = 1098616003 is a prime.

It is a super-2 number, since 2×1098620099² = 2413932243853539602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1098620059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549310049 + 549310050.

It is an arithmetic number, because the mean of its divisors is an integer number (549310050).

Almost surely, 2^1098620099 is an apocalyptic number.

1098620099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098620099 is an equidigital number, since it uses as much as digits as its factorization.

1098620099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 1098620099 is about 33145.4385851206. The cubic root of 1098620099 is about 1031.8482850282.

The spelling of 1098620099 in words is "one billion, ninety-eight million, six hundred twenty thousand, ninety-nine".