1874721240 has 512 divisors, whose sum is σ = 7838208000. Its totient is φ = 388620288.

The previous prime is 1874721221. The next prime is 1874721263. The reversal of 1874721240 is 421274781.

1874721240 is a `hidden beast` number, since 187 + 472 + 1 + 2 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1874721195 and 1874721204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3726829 + ... + 3727331.

It is an arithmetic number, because the mean of its divisors is an integer number (15309000).

Almost surely, 2^1874721240 is an apocalyptic number.

1874721240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1874721240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3919104000).

1874721240 is an abundant number, since it is smaller than the sum of its proper divisors (5963486760).

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

1874721240 is a wasteful number, since it uses less digits than its factorization.

1874721240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 1874721240 is about 43298.0512263543. The cubic root of 1874721240 is about 1233.0449246896.

The spelling of 1874721240 in words is "one billion, eight hundred seventy-four million, seven hundred twenty-one thousand, two hundred forty".