1887078940 has 12 divisors (see below), whose sum is σ = 3962865816. Its totient is φ = 754831568.

The previous prime is 1887078929. The next prime is 1887078943. The reversal of 1887078940 is 498707881.

It is a super-2 number, since 2×1887078940² = 7122133851583047200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1887078943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47176954 + ... + 47176993.

It is an arithmetic number, because the mean of its divisors is an integer number (330238818).

Almost surely, 2^1887078940 is an apocalyptic number.

1887078940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1887078940 is an abundant number, since it is smaller than the sum of its proper divisors (2075786876).

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

1887078940 is a wasteful number, since it uses less digits than its factorization.

1887078940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94353956 (or 94353954 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 52.

The square root of 1887078940 is about 43440.5218661102. The cubic root of 1887078940 is about 1235.7483026964.

The spelling of 1887078940 in words is "one billion, eight hundred eighty-seven million, seventy-eight thousand, nine hundred forty".