1098913553 has 2 divisors, whose sum is σ = 1098913554. Its totient is φ = 1098913552.

The previous prime is 1098913499. The next prime is 1098913589. The reversal of 1098913553 is 3553198901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 923430544 + 175483009 = 30388^2 + 13247^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098913553 - 2¹⁶ = 1098848017 is a prime.

It is a super-2 number, since 2×1098913553² = 2415221993934167618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1098913253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549456776 + 549456777.

It is an arithmetic number, because the mean of its divisors is an integer number (549456777).

Almost surely, 2^1098913553 is an apocalyptic number.

It is an amenable number.

1098913553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098913553 is an equidigital number, since it uses as much as digits as its factorization.

1098913553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 44.

The square root of 1098913553 is about 33149.8650525157. The cubic root of 1098913553 is about 1031.9401496774.

It can be divided in two parts, 10989 and 13553, that added together give a palindrome (24542).

The spelling of 1098913553 in words is "one billion, ninety-eight million, nine hundred thirteen thousand, five hundred fifty-three".