1089491854 has 8 divisors (see below), whose sum is σ = 1782804888. Its totient is φ = 495223560.

The previous prime is 1089491839. The next prime is 1089491857. The reversal of 1089491854 is 4581949801.

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

It is a junction number, because it is equal to n+sod(n) for n = 1089491798 and 1089491807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089491857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24761157 + ... + 24761200.

It is an arithmetic number, because the mean of its divisors is an integer number (222850611).

Almost surely, 2^1089491854 is an apocalyptic number.

1089491854 is a deficient number, since it is larger than the sum of its proper divisors (693313034).

1089491854 is a wasteful number, since it uses less digits than its factorization.

1089491854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49522370.

The product of its (nonzero) digits is 414720, while the sum is 49.

The square root of 1089491854 is about 33007.4514920495. The cubic root of 1089491854 is about 1028.9825167507.

The spelling of 1089491854 in words is "one billion, eighty-nine million, four hundred ninety-one thousand, eight hundred fifty-four".