1887228140 has 72 divisors (see below), whose sum is σ = 4881461760. Its totient is φ = 608982528.

The previous prime is 1887228139. The next prime is 1887228149. The reversal of 1887228140 is 418227881.

It is not an unprimeable number, because it can be changed into a prime (1887228149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39980 + ... + 73299.

It is an arithmetic number, because the mean of its divisors is an integer number (67798080).

Almost surely, 2^1887228140 is an apocalyptic number.

1887228140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1887228140 is an abundant number, since it is smaller than the sum of its proper divisors (2994233620).

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

1887228140 is a wasteful number, since it uses less digits than its factorization.

1887228140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113319 (or 113310 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 41.

The square root of 1887228140 is about 43442.2391227708. The cubic root of 1887228140 is about 1235.7808695707.

The spelling of 1887228140 in words is "one billion, eight hundred eighty-seven million, two hundred twenty-eight thousand, one hundred forty".