1871491740 has 48 divisors (see below), whose sum is σ = 5367993120. Its totient is φ = 486891520.

The previous prime is 1871491723. The next prime is 1871491789. The reversal of 1871491740 is 471941781.

1871491740 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1871491692 and 1871491701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377925 + ... + 382844.

It is an arithmetic number, because the mean of its divisors is an integer number (111833190).

Almost surely, 2^1871491740 is an apocalyptic number.

1871491740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1871491740 is an abundant number, since it is smaller than the sum of its proper divisors (3496501380).

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

1871491740 is a wasteful number, since it uses less digits than its factorization.

1871491740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760822 (or 760820 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 1871491740 is about 43260.7413251322. The cubic root of 1871491740 is about 1232.3364802736.

The spelling of 1871491740 in words is "one billion, eight hundred seventy-one million, four hundred ninety-one thousand, seven hundred forty".