1871130438 has 12 divisors (see below), whose sum is σ = 4054115988. Its totient is φ = 623710140.

The previous prime is 1871130433. The next prime is 1871130451. The reversal of 1871130438 is 8340311781.

1871130438 is a `hidden beast` number, since 187 + 11 + 30 + 438 = 666.

It is a super-2 number, since 2×1871130438² = 7002258232020143688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1871130433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51975828 + ... + 51975863.

It is an arithmetic number, because the mean of its divisors is an integer number (337842999).

Almost surely, 2^1871130438 is an apocalyptic number.

1871130438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1871130438 is an abundant number, since it is smaller than the sum of its proper divisors (2182985550).

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

1871130438 is a wasteful number, since it uses less digits than its factorization.

1871130438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103951699 (or 103951696 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1871130438 is about 43256.5652589292. The cubic root of 1871130438 is about 1232.2571720083.

The spelling of 1871130438 in words is "one billion, eight hundred seventy-one million, one hundred thirty thousand, four hundred thirty-eight".