1878449950 has 24 divisors (see below), whose sum is σ = 3762681048. Its totient is φ = 693581280.

The previous prime is 1878449933. The next prime is 1878449957. The reversal of 1878449950 is 599448781.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1878449891 and 1878449900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1878449957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1444312 + ... + 1445611.

It is an arithmetic number, because the mean of its divisors is an integer number (156778377).

Almost surely, 2^1878449950 is an apocalyptic number.

1878449950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1878449950 is an abundant number, since it is smaller than the sum of its proper divisors (1884231098).

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

1878449950 is a wasteful number, since it uses less digits than its factorization.

1878449950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2889948 (or 2889943 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 55.

The square root of 1878449950 is about 43341.0884727184. The cubic root of 1878449950 is about 1233.8618678604.

The spelling of 1878449950 in words is "one billion, eight hundred seventy-eight million, four hundred forty-nine thousand, nine hundred fifty".