1940153878 has 16 divisors (see below), whose sum is σ = 3299047920. Its totient is φ = 848326176.

The previous prime is 1940153869. The next prime is 1940153899. The reversal of 1940153878 is 8783510491.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1963225 + ... + 1964212.

It is an arithmetic number, because the mean of its divisors is an integer number (206190495).

Almost surely, 2^1940153878 is an apocalyptic number.

1940153878 is a deficient number, since it is larger than the sum of its proper divisors (1358894042).

1940153878 is a wasteful number, since it uses less digits than its factorization.

1940153878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3927471.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 1940153878 is about 44047.1778664650. The cubic root of 1940153878 is about 1247.2266788088.

The spelling of 1940153878 in words is "one billion, nine hundred forty million, one hundred fifty-three thousand, eight hundred seventy-eight".