1854726340 has 24 divisors (see below), whose sum is σ = 3900845592. Its totient is φ = 740762880.

The previous prime is 1854726331. The next prime is 1854726421. The reversal of 1854726340 is 436274581.

It can be written as a sum of positive squares in 4 ways, for example, as 426339904 + 1428386436 = 20648^2 + 37794^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1854726293 and 1854726302.

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, 56929 + ... + 83368.

It is an arithmetic number, because the mean of its divisors is an integer number (162535233).

Almost surely, 2^1854726340 is an apocalyptic number.

1854726340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1854726340 is an abundant number, since it is smaller than the sum of its proper divisors (2046119252).

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

1854726340 is a wasteful number, since it uses less digits than its factorization.

1854726340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140967 (or 140965 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 1854726340 is about 43066.5338749243. The cubic root of 1854726340 is about 1228.6455533710.

The spelling of 1854726340 in words is "one billion, eight hundred fifty-four million, seven hundred twenty-six thousand, three hundred forty".