1098649734 has 96 divisors (see below), whose sum is σ = 2807506944. Its totient is φ = 280350720.

The previous prime is 1098649697. The next prime is 1098649751. The reversal of 1098649734 is 4379468901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 217542 + ... + 222534.

It is an arithmetic number, because the mean of its divisors is an integer number (29244864).

Almost surely, 2^1098649734 is an apocalyptic number.

1098649734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1098649734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1403753472).

1098649734 is an abundant number, since it is smaller than the sum of its proper divisors (1708857210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1098649734 is a wasteful number, since it uses less digits than its factorization.

1098649734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5062 (or 5049 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 1098649734 is about 33145.8856270277. The cubic root of 1098649734 is about 1031.8575628938.

The spelling of 1098649734 in words is "one billion, ninety-eight million, six hundred forty-nine thousand, seven hundred thirty-four".