1098867896361 has 9 divisors (see below), whose sum is σ = 1587258170589. Its totient is φ = 732576501036.

The previous prime is 1098867896309. The next prime is 1098867896363. The reversal of 1098867896361 is 1636987688901.

The square root of 1098867896361 is 1048269.

It is a perfect power (a square), and thus also a powerful number.

1098867896361 is a `hidden beast` number, since 10 + 98 + 86 + 7 + 8 + 96 + 361 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1098867896361 - 2²¹ = 1098865799209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1098867896361.

It is not an unprimeable number, because it can be changed into a prime (1098867896363) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2970096 + ... + 3319518.

Almost surely, 2^{1098867896361} is an apocalyptic number.

1098867896361 is the 1048269-th square number.

1098867896361 is the 524135-th centered octagonal number.

It is an amenable number.

1098867896361 is a deficient number, since it is larger than the sum of its proper divisors (488390274228).

1098867896361 is an frugal number, since it uses more digits than its factorization.

1098867896361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698852 (or 349426 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 72.

The spelling of 1098867896361 in words is "one trillion, ninety-eight billion, eight hundred sixty-seven million, eight hundred ninety-six thousand, three hundred sixty-one".