1887428136 has 32 divisors (see below), whose sum is σ = 5147532000. Its totient is φ = 571947840.

The previous prime is 1887428131. The next prime is 1887428143. The reversal of 1887428136 is 6318247881.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1887428131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3574411 + ... + 3574938.

It is an arithmetic number, because the mean of its divisors is an integer number (160860375).

Almost surely, 2^1887428136 is an apocalyptic number.

It is an amenable number.

1887428136 is an abundant number, since it is smaller than the sum of its proper divisors (3260103864).

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

1887428136 is a wasteful number, since it uses less digits than its factorization.

1887428136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7149369 (or 7149365 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The square root of 1887428136 is about 43444.5409228824. The cubic root of 1887428136 is about 1235.8245213327.

It can be divided in two parts, 188742 and 8136, that added together give a triangular number (196878 = T₆₂₇).

The spelling of 1887428136 in words is "one billion, eight hundred eighty-seven million, four hundred twenty-eight thousand, one hundred thirty-six".