1867878474 has 128 divisors (see below), whose sum is σ = 4830769152. Its totient is φ = 467389440.

The previous prime is 1867878469. The next prime is 1867878479. The reversal of 1867878474 is 4748787681.

It is an interprime number because it is at equal distance from previous prime (1867878469) and next prime (1867878479).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1867878479) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1931139 + ... + 1932105.

It is an arithmetic number, because the mean of its divisors is an integer number (37740384).

Almost surely, 2^1867878474 is an apocalyptic number.

1867878474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1867878474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2415384576).

1867878474 is an abundant number, since it is smaller than the sum of its proper divisors (2962890678).

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

1867878474 is a wasteful number, since it uses less digits than its factorization.

1867878474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140.

The product of its digits is 16859136, while the sum is 60.

The square root of 1867878474 is about 43218.9596589275. The cubic root of 1867878474 is about 1231.5428837153.

The spelling of 1867878474 in words is "one billion, eight hundred sixty-seven million, eight hundred seventy-eight thousand, four hundred seventy-four".