1100671978 has 32 divisors (see below), whose sum is σ = 1951060608. Its totient is φ = 455884800.

The previous prime is 1100671973. The next prime is 1100672029. The reversal of 1100671978 is 8791760011.

It is a super-2 number, since 2×1100671978² = 2422957606308864968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1100671978.

It is not an unprimeable number, because it can be changed into a prime (1100671973) 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, 52458 + ... + 70378.

It is an arithmetic number, because the mean of its divisors is an integer number (60970644).

Almost surely, 2^1100671978 is an apocalyptic number.

1100671978 is a deficient number, since it is larger than the sum of its proper divisors (850388630).

1100671978 is a wasteful number, since it uses less digits than its factorization.

1100671978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18078.

The product of its (nonzero) digits is 21168, while the sum is 40.

The square root of 1100671978 is about 33176.3768063964. The cubic root of 1100671978 is about 1032.4902755544.

The spelling of 1100671978 in words is "one billion, one hundred million, six hundred seventy-one thousand, nine hundred seventy-eight".