1100378380 has 24 divisors (see below), whose sum is σ = 2446724448. Its totient is φ = 414259968.

The previous prime is 1100378371. The next prime is 1100378381. The reversal of 1100378380 is 838730011.

It is not an unprimeable number, because it can be changed into a prime (1100378381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1617864 + ... + 1618543.

It is an arithmetic number, because the mean of its divisors is an integer number (101946852).

Almost surely, 2^1100378380 is an apocalyptic number.

1100378380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100378380 is an abundant number, since it is smaller than the sum of its proper divisors (1346346068).

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

1100378380 is a wasteful number, since it uses less digits than its factorization.

1100378380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236433 (or 3236431 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1100378380 is about 33171.9517062231. The cubic root of 1100378380 is about 1032.3984637512.

The spelling of 1100378380 in words is "one billion, one hundred million, three hundred seventy-eight thousand, three hundred eighty".