1098315779 has 8 divisors (see below), whose sum is σ = 1204247088. Its totient is φ = 993398560.

The previous prime is 1098315763. The next prime is 1098315781. The reversal of 1098315779 is 9775138901.

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

It is not a de Polignac number, because 1098315779 - 2⁴ = 1098315763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1098215779) 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, 251252 + ... + 255585.

It is an arithmetic number, because the mean of its divisors is an integer number (150530886).

Almost surely, 2^1098315779 is an apocalyptic number.

1098315779 is a deficient number, since it is larger than the sum of its proper divisors (105931309).

1098315779 is a wasteful number, since it uses less digits than its factorization.

1098315779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507045.

The product of its (nonzero) digits is 476280, while the sum is 50.

The square root of 1098315779 is about 33140.8475902473. The cubic root of 1098315779 is about 1031.7530015391.

It can be divided in two parts, 10983 and 15779, that added together give a palindrome (26762).

The spelling of 1098315779 in words is "one billion, ninety-eight million, three hundred fifteen thousand, seven hundred seventy-nine".