1098544947 has 16 divisors (see below), whose sum is σ = 1554901920. Its totient is φ = 687498752.

The previous prime is 1098544943. The next prime is 1098544949. The reversal of 1098544947 is 7494458901.

It is a cyclic number.

It is not a de Polignac number, because 1098544947 - 2² = 1098544943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 1098544947.

It is not an unprimeable number, because it can be changed into a prime (1098544943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7848 + ... + 47525.

It is an arithmetic number, because the mean of its divisors is an integer number (97181370).

Almost surely, 2^1098544947 is an apocalyptic number.

1098544947 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1098544947 is a deficient number, since it is larger than the sum of its proper divisors (456356973).

1098544947 is a wasteful number, since it uses less digits than its factorization.

1098544947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55782.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The square root of 1098544947 is about 33144.3048954115. The cubic root of 1098544947 is about 1031.8247563517.

The spelling of 1098544947 in words is "one billion, ninety-eight million, five hundred forty-four thousand, nine hundred forty-seven".