1098402787 has 6 divisors (see below), whose sum is σ = 1159256508. Its totient is φ = 1040591772.

The previous prime is 1098402769. The next prime is 1098402871. The reversal of 1098402787 is 7872048901.

It is not a de Polignac number, because 1098402787 - 2²³ = 1090014179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098402727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1520973 + ... + 1521694.

It is an arithmetic number, because the mean of its divisors is an integer number (193209418).

Almost surely, 2^1098402787 is an apocalyptic number.

1098402787 is a deficient number, since it is larger than the sum of its proper divisors (60853721).

1098402787 is an equidigital number, since it uses as much as digits as its factorization.

1098402787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042705 (or 3042686 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 1098402787 is about 33142.1602645331. The cubic root of 1098402787 is about 1031.7802457969.

The spelling of 1098402787 in words is "one billion, ninety-eight million, four hundred two thousand, seven hundred eighty-seven".