1109697854 has 4 divisors (see below), whose sum is σ = 1664546784. Its totient is φ = 554848926.

The previous prime is 1109697839. The next prime is 1109697931. The reversal of 1109697854 is 4587969011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4587969011 = 251 ⋅18278761.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 277424462 + ... + 277424465.

It is an arithmetic number, because the mean of its divisors is an integer number (416136696).

Almost surely, 2^1109697854 is an apocalyptic number.

1109697854 is a deficient number, since it is larger than the sum of its proper divisors (554848930).

1109697854 is an equidigital number, since it uses as much as digits as its factorization.

1109697854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554848929.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 1109697854 is about 33312.1277315034. The cubic root of 1109697854 is about 1035.3048504943.

The spelling of 1109697854 in words is "one billion, one hundred nine million, six hundred ninety-seven thousand, eight hundred fifty-four".