103878149 has 4 divisors (see below), whose sum is σ = 109345440. Its totient is φ = 98410860.

The previous prime is 103878121. The next prime is 103878163. The reversal of 103878149 is 941878301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103878149 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103878119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2733617 + ... + 2733654.

It is an arithmetic number, because the mean of its divisors is an integer number (27336360).

Almost surely, 2^103878149 is an apocalyptic number.

103878149 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

103878149 is a deficient number, since it is larger than the sum of its proper divisors (5467291).

103878149 is an equidigital number, since it uses as much as digits as its factorization.

103878149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5467290.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 103878149 is about 10192.0630394440. The cubic root of 103878149 is about 470.0832039205.

The spelling of 103878149 in words is "one hundred three million, eight hundred seventy-eight thousand, one hundred forty-nine".