1987050195 has 48 divisors (see below), whose sum is σ = 3742109280. Its totient is φ = 969550848.

The previous prime is 1987050187. The next prime is 1987050209. The reversal of 1987050195 is 5910507891.

It is not a de Polignac number, because 1987050195 - 2³ = 1987050187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1987050195.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51076 + ... + 81134.

It is an arithmetic number, because the mean of its divisors is an integer number (77960610).

Almost surely, 2^1987050195 is an apocalyptic number.

1987050195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1987050195 is a deficient number, since it is larger than the sum of its proper divisors (1755059085).

1987050195 is a wasteful number, since it uses less digits than its factorization.

1987050195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30196 (or 30193 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 45.

The square root of 1987050195 is about 44576.3412024809. The cubic root of 1987050195 is about 1257.1958709965.

The spelling of 1987050195 in words is "one billion, nine hundred eighty-seven million, fifty thousand, one hundred ninety-five".