1878717942 has 16 divisors (see below), whose sum is σ = 4174928880. Its totient is φ = 626239296.

The previous prime is 1878717823. The next prime is 1878717959. The reversal of 1878717942 is 2497178781.

It is a super-2 number, since 2×1878717942² = 7059162211185430728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 34791073 = 1878717942 / (1 + 8 + 7 + 8 + 7 + 1 + 7 + 9 + 4 + 2).

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, 17395483 + ... + 17395590.

It is an arithmetic number, because the mean of its divisors is an integer number (260933055).

Almost surely, 2^1878717942 is an apocalyptic number.

1878717942 is an abundant number, since it is smaller than the sum of its proper divisors (2296210938).

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

1878717942 is a wasteful number, since it uses less digits than its factorization.

1878717942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34791084 (or 34791078 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 54.

The square root of 1878717942 is about 43344.1800245431. The cubic root of 1878717942 is about 1233.9205420145.

The spelling of 1878717942 in words is "one billion, eight hundred seventy-eight million, seven hundred seventeen thousand, nine hundred forty-two".