1098620158 has 16 divisors (see below), whose sum is σ = 1695108096. Its totient is φ = 533718360.

The previous prime is 1098620099. The next prime is 1098620177. The reversal of 1098620158 is 8510268901.

It is a self number, because there is not a number n which added to its sum of digits gives 1098620158.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17016 + ... + 49867.

It is an arithmetic number, because the mean of its divisors is an integer number (105944256).

Almost surely, 2^1098620158 is an apocalyptic number.

1098620158 is a deficient number, since it is larger than the sum of its proper divisors (596487938).

1098620158 is a wasteful number, since it uses less digits than its factorization.

1098620158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67119.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 1098620158 is about 33145.4394751375. The cubic root of 1098620158 is about 1031.8483034995.

The spelling of 1098620158 in words is "one billion, ninety-eight million, six hundred twenty thousand, one hundred fifty-eight".