1098668397 has 8 divisors (see below), whose sum is σ = 1466341344. Its totient is φ = 731720528.

The previous prime is 1098668387. The next prime is 1098668399. The reversal of 1098668397 is 7938668901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1098668397 - 2²³ = 1090279789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098668399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177723 + ... + 183800.

It is an arithmetic number, because the mean of its divisors is an integer number (183292668).

Almost surely, 2^1098668397 is an apocalyptic number.

It is an amenable number.

1098668397 is a deficient number, since it is larger than the sum of its proper divisors (367672947).

1098668397 is a wasteful number, since it uses less digits than its factorization.

1098668397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362539.

The product of its (nonzero) digits is 3919104, while the sum is 57.

The square root of 1098668397 is about 33146.1671539863. The cubic root of 1098668397 is about 1031.8634056564.

The spelling of 1098668397 in words is "one billion, ninety-eight million, six hundred sixty-eight thousand, three hundred ninety-seven".