1098476623649 has 4 divisors (see below), whose sum is σ = 1103034618180. Its totient is φ = 1093918629120.

The previous prime is 1098476623549. The next prime is 1098476623723. The reversal of 1098476623649 is 9463266748901.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1018807609600 + 79669014049 = 1009360^2 + 282257^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098476623649 - 2²⁸ = 1098208188193 is a prime.

It is a super-3 number, since 3×1098476623649³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098476623549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2278996904 + ... + 2278997385.

It is an arithmetic number, because the mean of its divisors is an integer number (275758654545).

Almost surely, 2^{1098476623649} is an apocalyptic number.

It is an amenable number.

1098476623649 is a deficient number, since it is larger than the sum of its proper divisors (4557994531).

1098476623649 is an equidigital number, since it uses as much as digits as its factorization.

1098476623649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4557994530.

The product of its (nonzero) digits is 94058496, while the sum is 65.

The spelling of 1098476623649 in words is "one trillion, ninety-eight billion, four hundred seventy-six million, six hundred twenty-three thousand, six hundred forty-nine".