1942878815 has 8 divisors (see below), whose sum is σ = 2332330848. Its totient is φ = 1553718880.

The previous prime is 1942878787. The next prime is 1942878827. The reversal of 1942878815 is 5188782491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1942878815 - 2¹⁴ = 1942862431 is a prime.

It is a Duffinian 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, 58112 + ... + 85221.

It is an arithmetic number, because the mean of its divisors is an integer number (291541356).

Almost surely, 2^1942878815 is an apocalyptic number.

1942878815 is a deficient number, since it is larger than the sum of its proper divisors (389452033).

1942878815 is a wasteful number, since it uses less digits than its factorization.

1942878815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146049.

The product of its digits is 1290240, while the sum is 53.

The square root of 1942878815 is about 44078.0990402263. The cubic root of 1942878815 is about 1247.8103136588.

The spelling of 1942878815 in words is "one billion, nine hundred forty-two million, eight hundred seventy-eight thousand, eight hundred fifteen".